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217 Cards in this Set

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