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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
