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a straight line connecting two points on a curve


the distance around the outside of a circle

composite number

a whole number greater than 1 that has more than two factors


the distance across a circle through its center

expanded notation

A way to write numbers that shows the value of each digit

greatest common factor

The largest factor that two or more numbers have in common.


a seven-sided polygon


a bar graph that shows the frequency of data within equal intervals


the longest side of a right triangle

least common denominator

The least common multiple of the denominators of two or more fractions.

least common multiple

the smallest multiple that is exactly divisible by every member of a set of numbers


a nine-sided polygon


A flat surface that goes on forever in all directions

prime number

A whole number that has exactly two factors, 1 and itself.


four regions into which a coordinate plane is divided by the x-axis and the y-axis


the length of a line segment between the center and circumference of a circle or sphere


the relative speed of progress or change


the relative magnitudes of two quantities (usually expressed as a quotient)

regular polygon

a polygon with all sides and all angles equal

repeating decimal

a decimal with a sequence of digits that repeats itself indefinitely

similar polygons

polygons that are the same shape but different sizes

straight angle

an angle of 180 degrees

terminating decimal

a decimal whose digits end

unit price

The price of a single item or amount (e.g., $3.50 per pound).

whole number

a number without fractions; an integer.

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