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A positive integer that cannot be divided by another number other than itself and one without a remainder.
Order the set of numbers from highest to lowest and the number right in the middle is the median.
An array of symbols that are separated into left and right sides and joined by an equal sign.
A parallelogram that opposite congruent angles and sides. Ex: a square that appears to lean.
When a shape can be divided in equal halves that reflect each other. Ex: when you can fold a shape in half and they exactly mirror eachother.
The distance from a point on the circle through the center point to the opposite point on the other side.
A prism (3-D) shape with round edges and 2 flat parellel circular bases. Example: a soup can.
The symbol used to separate the whole number part from the fractional part of a number.
A pair of elements x and y from a set, written (x,y), where x is the first and y is the second.
A diagram using circles of sets, with the position and overlap of the circles indicating the relationships between the sets.
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