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217 Cards in this Set
- Front
- Back
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Absolute Value
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the distance of a number from zero on a number line
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Arc
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a segment of the circle
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Surface Area
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the sum of the areas of all the faces of a solid figure
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Vertical Angles
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2 opposite congruent angles formed by intersecting lines
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Adjacent Angles
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2 angles that have a common vertex and one common side
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Complementary Angles
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2 angles whose sum equals 90°
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Supplementary Angles
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2 angles whose sum equals 180°
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Corresponding Angles
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angles that are in the same position in different figures
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Acute angle
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an angle that measures less than 90° (cute little angle)
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Obtuse angle
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an angle that measures more than 90° but less than 180° (O-big)
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a.m.
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used to show time between midnight and noon
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Associative Property of Multiplication
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the way that factors are grouped does not change the product
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average
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the sum of addends divided by the number of addends
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addend
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a number that is added
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angle
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the figure made by 2 rays that extend from a common endpoint
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array
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an arrangement of objects in rows and columns
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Bisect
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to divide into two equal parts
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Coordinates
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the numbers in an ordered pair (representing the X and Y axis) (3,7) (5,-4)
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certain
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to be sure or definite
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Chord
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a line segment with both endpoints on the circle
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cube
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a space figure with 6 congruent faces, 8 vertices, and 12 equal edges
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circle
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a closed plane figure with all the points the same distance from center
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cup (c)
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a customary unit of capacity
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Diameter
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a line segment that passes through the center of the circle with its endpoints on the circle
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decimal point
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a dot separating the ones and tenths places in a decimal number
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decimeter (dm)
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a metric unit of length
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Face
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the flat surface of a solid figure
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digit
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the symbols 0 to 9 used to write numbers
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Edge
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the line segment where two faces of a solid figure meet
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equivalent decimals
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2 decimals that are equal
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Regular polygon
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a polygon that has all congruent sides and angles
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Rhombus
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a parallelogram with four congruent sides
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degree Celsius (C)
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a metric unit used to measure temperature
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centimeter (cm)
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a metric unit of length
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Dilation
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changing the size of a figure while keeping the same shape
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Least Common Multiple (LCM)
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the smallest number that is a common multiple of two or more numbers
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data
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a collection of facts gathered by observation, questioning, or measuring
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degree (F)
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a customary unit used to measure temperature
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Greatest Common Factor (GCF)
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the largest factor that two or more numbers have in common
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decade
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10 years
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Corresponding Sides
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sides that are in the same position in different figures
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Prime factorization
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a number written as the product of all its prime factors
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common factor
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a number that is a factor of two or more numbers
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Median
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the middle number (or average of the two middle numbers) in an ordered set of data
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Mean
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the “average” of a set of data (1. Total all the numbers, 2. Divide the sum by how many numbers there were)
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Perpendicular lines
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two lines that intersect and form four right angles
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Oblique lines
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two lines that intersect but do NOT form four right angles
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Equivalent
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having the same value or naming the same amount "="
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decimal number
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a number containing a decimal point
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difference
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the answer to a subtraction problem
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endpoint
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a point at the end of a line segment or ray
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front-end digit
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the digit in the place with the greatest value
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hexagon
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a polygon with 6 sides and 6 vertices
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inverse operations
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2 operations with the opposite effect like multiplication and division
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line graph
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a graph used to show how data changes over time
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mirror image
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the reverse image of a figure
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ounce (oz)
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a customary unit of mass
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period
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a group of 3 digits in a number separated by a comma from the other digits
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plane figure
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any 2-dimensional figure
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product
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the answer to a multiplication problem
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remainder
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the number that is left after dividing
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space figure
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a figure with 3 dimensions
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teaspoon (tsp)
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a customary unit of capacity
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trapezoid
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a quadrilateral with 1 pair of parallel sides and 1 pair of sides that are not parallel
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whole number
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any of the counting numbers 0, 1, 2, 3, 4, 5, 6, 7….
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equally likely
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outcomes having the same chance of happening
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fact family
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all related +/- or x/- facts that use the same numbers
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front-end estimation
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an estimation made using the front-end digit of a number
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hundredths
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the name of the second place after the decimal point
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kilogram (kg)
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a metric unit of mass
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meter
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a metric unit of length/distance
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outcome
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a result of a probability experiment
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plot
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using an ordered pair to locate a point on a grid
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Property of 1 for Division
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any number divided by 1 is that number
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sphere
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a three-dimesional figure with a curved surface that is shaped like a ball
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tenths
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the name of the first place after the decimal point
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turn (rotation)
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a transformation of a figure by turning it
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word form
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a number written in words
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bar graph
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a graph that uses bars to compare data
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closed figure
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a plan figure that completely surrounds an area
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customary system
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a system of measurement used in the U.S.
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factors
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numbers that are multiplied to give a product
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gallon (gal)
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a customary unit of capacity
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impossible
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cannot happen
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kilometer (km)
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a metric unit of length
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line segment
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a part of a line with 2 endpoints
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metric system
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a measurement system based on tens
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most likely
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outcomes that have a greater chance of happening
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octagon
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a polygon with 8 sides and 8 vertices
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p.m.
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used to show the time between noon and midnight
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pictograph
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a graph that uses pictures or symbols to show data
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point
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any exact location in space represented by a dot
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Property of 1 for Multiplication
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the product of any number and 1 is that number
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sum
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the answer to an addition problem
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three-dimensional (3-D) figures
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space figures that have length width and height
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two-dimensional figures (2-D)
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plane figures that have length and width
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yard (yd)
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a customary unit of length
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Commutative Property of Multiplication
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the order in which numbers are multiplied does not change the product
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equivalent fractions
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2 fractions that are equal
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fraction
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a number that names parts of a whole
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gram (g)
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a metric unit of mass
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improper fraction
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a fraction with a value greater than 1, the numerator is greater than or equal to the demonimator
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least likely
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outcomes that have a smaller chance of happening
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liter (L)
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a metric unit of capacity
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Hypotenuse
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the side of a right triangle that is opposite of the right angle
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milliliter (mL)
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a metric unit of capacity
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multiple
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the product of a whole number and any other whole number
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open figure
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a plane figure that does not completely enclose an area
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pint (pt)
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a customary unit of capacity
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polygon
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a closed plane figure made with line segments
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pyramid
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a space figure whose base is a polygon, and other faces are triangles that meet at a vertex
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ray
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a part of a line that has 1 endpoint and goes on and on in one direction
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round
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to estimate a number to the nearest ten, hundred, or thousand
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square pyramid
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a space figure with a square base and 4 faces that are triangles and meet in a vertex.
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ton (t)
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a customary unit of weight
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Venn diagram
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a diagram that uses intersecting circles to compare groups of objects
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Zero Property of Division
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0 divided by any number except 0 is 0. A number cannot be divided by zero.
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flip (reflection)
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a transformation that results in a mirror image of a figure
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graph
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a drawing used to record information
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inch (in.)
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a customary unit of length
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less than (<)
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the symbol used to compare 2 numbers when the smaller number is on the left
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mass
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the weight of an object
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millimeter (mm)
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a metric unit of length
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number line
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a line on which points correspond to numbers
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pentagon
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a polygon with 5 sides and 5 vertices
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place value
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the value determined by the position of a digit in a number
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pound (lb)
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a customary unit of mass
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quadrilateral
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a 4-sided polygon
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rectangular prism
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a space figure with 6 rectangular faces, 8 vertices, and 12 edges
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side
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a line segment that is part of a plane figure
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standard form
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a number written with one digit for each place value
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transformation
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an operation on a geometric figure by which another image is created
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Zero Property of Multiplication
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the product of any number and 0 is 0.
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elapsed time
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the amount of time between 2 given times
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expanded form
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a way to write numbers that shows the value of each digit
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foot (ft)
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a customary unit of length
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greater than (>)
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the symbol used to compare 2 numbers when the larger one is on the left
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line
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a straight path that goes on and on in 2 directions with no endpoints
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Pythagorean Theorem
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in a right triangle the sum of the squares of the two sides equals the square of the hypotenuse (a² + b² = C²)
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mode
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the number that appears most often in a set of numbers
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number sentence
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an equation or inequality written with numbers and symbols
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ordinal number
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a number telling the position of something
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plane
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a flat surface that goes on and on in all directions
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quart (qt)
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a customary unit of capacity
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slide (translation)
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a transformation that moves a figure by slidings each of the points the same distance and direction
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tablespoon (tbsp)
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a customary unit of capacity
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Scalene Triangle
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a triangle with no sides that are the same length
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Isosceles Triangle
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a triangle with two sides that are the same length
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Equilateral Triangle
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a triangle with three sides that are the same length
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century
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100 years
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Origin
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the point where the x-axis and the y-axis intersect (0,0)
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prime number
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a whole number that has exactly two factors - one and the number itself
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Transversal
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a line which intersects two or more other lines
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Net
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a two dimensional model that can be folded to make a solid
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Like Terms
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terms that have the same variable with the same exponent
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numerator
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the top number of a fraction (telling how many pieces of the whole are counted)
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Variable
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a letter used to represent a number
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denominator
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the bottom number of a fraction (telling how many pieces the whole has been divided into)
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Rate
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a ratio that compares 2 quantities with different units of measure
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Vertex (or vertices)
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the point where 2 rays, 2 sides of a polygon or 3 or more edges of a solid figure meet (or the top of a cone)
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Sample space
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the set of all possible outcomes in a probability experiment
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mixed number
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a number written as a whole number with a fraction
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Ratio
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the comparison of two numbers by division
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simplest form
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when 1 is the only number that can divide evenly into the numerator and denominator
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probability
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the likelihood of an event happening written in fraction form as: (number of favorable outcomes/number of possible outcomes)
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Integers
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positive and negative whole numbers and 0
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possible outcome
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the possible result of an experiment
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intersecting lines
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lines that cross each other
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right angle
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a 90° angle (shaped like a capital L)
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diagonal
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slanting lines that are not horizontal or vertical
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line of symmetry
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an imaginary line that divides a shape into 2 exactly alike parts
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irregular polygon
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a polygon with sides that are not all the same length
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triangle
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a three-sided polygon
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quadrilateral
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a four-sided polygon
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parallelogram
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a quadrilateral with two pairs of parallel sides
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rectangle
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a parallelogram with four right angles
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square
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a rectangle with four sides the same length
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cone
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a solid pointed figure with a flat round base
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cylinder
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a solid figure that is shaped like a can
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similar figures
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figures that are the same shape but have different sizes
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reflection (flip)
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moving a figure to a new position by "flipping" it over a line
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rotation (turn)
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moving a figure to a new position by "turning" it around a point
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translation (slide)
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moving a figure to a new position without flipping or turning
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parallel lines
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lines that never cross and stay the same distance apart
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Perimeter
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the distance around a figure (adding up all the sides around the object and measured in units)
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Area
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the space covered by the inside of a flat shape (length X width and measured in square units)
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Volume
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the area of the base of a prism X the height and measured in cubic units)
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coordinate grid
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a grid formed by a horizontal line, the x-axis, and a vertical line, the y-axis
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ordered pair
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coordinate points representing the x and y axis (x,y)
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central tendency
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mean, median, mode
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range
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the difference between the greatest and the least number in a set of data (largest number minus smallest number)
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Quotient
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the answer to a division problem (dividend/divisor=quotient)
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Divisor
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the number that is dividing another number (dividend/divisor=quotient)
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Dividend
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the number that is being divided (dividend/divisor=quotient)
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Estimate
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a number close to an exact number
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compatible numbers
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numbers that are easy to compute mentally
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measures of central tendency
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the mean, median, and mode of data sets
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coordinate plane
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a plane formed by a horizontal line (x-axis) that intersects a vertical line (y-axis)
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straight angle
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an angle of 180 degrees
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congruent
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being equal in size or shape
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equilateral
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a triangle with all three sides congruent
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Radius
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half of the diameter of a circle (the distance from the center to the edge of a circle)
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Circumference
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the distance around a circle
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Capacity
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the amount a container can hold when filled
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Weight
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the measure of the pull of gravity on an object
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simple event
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a sample outcome of an experiment (an event that has one outcome)
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complement
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all outcomes different from the favorable outcome (the opposite of an event)
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Proportional
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related by a constant ratio
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Constant
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having a fixed value - not changing
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rate of change
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the ratio of the difference in values of a variable during a time period
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unit rate
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a ratio that can be expressed with a denominator of 1
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rational numbers
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integers, fractions, and decimals
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composite number
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a whole number that has three or more factors
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factor
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a number multiplied by another number to get a product
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Exponent
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a number that tells how many times the base number is to be used as a factor (written above and after the base number
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base number
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a number used as a repeated factor
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proportion
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an equation that shows that two ratios are equal
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