### 65 terms by toddcaulfield

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### acute triangle

triangle with all angles less than 90 degrees

### algebraic expression

numbers, symbols, and variables

### area

space inside a 2D figure

### bar graph

uses bars to compare data

### base

the bottom of a figure

### circumference

distance around a circle

### congruent

same size and shape

### cubed

the third power (exponent of 3)

### denominator

bottom of fraction

### diameter

distance across a circle

### dilation

a larger or smaller version of a figure

### equation

a math sentence with an = sign

### equilateral triangle

triangle where all sides are equal length

### equivalent fractions

two equal fractions

### experimental probability

chances based on results of experiment

### exponent

tells how many times to multiply a number

### expression

collection of numbers, symbols, and/or variables

### factor

a number that can be multiplied to make another number

### frequency table

uses tallys to record how often something occurs

### GCF

greatest common factor

### histogram

uses bars to compare intervals of numbers

### inequality

one expression in greater than or less than another

### integers

positive whole numbers and opposites

### isosceles triangle

two sides are the same

### LCM

least common multiple - least common number that two numbers are factors of

### line graph

best type of graph for changes over time

### line plot

uses x's to show how often a data item occurs

### mean

the average of a group of numbers - add numbers and divide by how many numbers

### median

the middle number in a set of numbers

### mode

the most common in a set of numbers

### numerator

the top of a fraction

### obtuse triangle

a triangle with one angle larger than 90 degrees

### order of operations

parenthesis, exponents, multiply and divide, add and subtract

### outlier

a value that is much greater or much less than the rest of the numbers

never intersect

### perpendicular

intersect and form a right angle

### parallelogram

quadrilateral with 2 pairs of parallel sides

### percent

a ratio out of 100

### perimeter

the distance around a polygon

a flat surface

### polygon

closed figure made of at least 3 line segments

### prime factorization

writing composite numbers and product of primes

### prime number

number that has only 2 factors (1 and itself)

### probability

measuring how likely something is to occur

2 equal ratios

having 4 sides

### quotient

the answer to a division problem

halfway across circle; from center to edge of circle

### range

highest value minus lowest value

### ratio

comparing 2 numbers by division

### reflection

a mirror image of a figure

### right triangle

triangle with a right angle

### rotation

turning a figure around a point

### rule

a procedure for creating a pattern in a series of numbers

### scalene triangle

all sides different length in a triangle

### sector

a part of a circle

### similar figures

same shape, but a larger or smaller version; sides form a proportion

### squared

number to the second power (times itself)

### surface area

area of the outside of a 3D figure

### theoretical probability

what should happen based on possible outcomes

### translation

moving (or sliding) a figure along a straight path

### trial

performing an experiment

### variable

letter used to represent an unknown quantity

### volume

space inside a 3D figure

### vertex

corner of a 2D or 3D figure where 2 lines meet

Example: