###
Cartesian coordinate system

a method of locating points in the plane that uses pairs of numbers denoting distances along two fixed intersecting number lines, called axes

###
centimeter

Metric unit of measure that equals 10 millimeters

###
chord

a line segment whose endpoints are on a circle

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circle

a planar geometric figure in which every point on the figure is the same distance from a point at the center

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circumference

the distance around a circle, also called the perimeter of the circle

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coefficient

any factor or any product of factors of a product

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commutative property

a property of real numbers that states that for any real numbers a and b, a + b = b + a and a x b = b x a

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complex fraction

a fraction whose numerator or denominator (or both) contains a fraction

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concave polygon

a polygon in which one or more interior angles have a measure greater than 180 degrees

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conditional equation

an equation whose truth or falsity depends on the numbers used to replace the variables in the equation

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