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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° (Obig)


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


frontend 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 2dimensional 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


frontend estimation

an estimation made using the frontend 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 threedimesional 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


threedimensional (3D) figures

space figures that have length width and height


twodimensional figures (2D)

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 4sided 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 xaxis and the yaxis 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 threesided polygon


quadrilateral

a foursided 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 xaxis, and a vertical line, the yaxis


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 (xaxis) that intersects a vertical line (yaxis)


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
