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Parabola	set of points equal distance from a focus and a directrix

Parallel	extending where each matching point on different lines is equidistant

Parallelogram	A quadrilateral with both pairs of opposite sides parallel to each other.

Pentagon	A polygon having five angles and five sides. Each angle is 108 degrees.

Percent	a number out of 100 (%) Example: "50%, 75%"

Perimeter	The border of a two-demensional figure.

Perpendicular	at right angles to

Pi	ratio of the circumference to the diameter of a circle (3.1415926...)

Plane Geometry	area of geometry dealing two-dimensional figures

Point	"a place in space with zero dimensions, shape, size, or extension"

Polygon	A closed figure with three of more straight sides.

Positive Number	A number that is greater than zero. Example: 1,2,3,4,5,6,7

Prime Factorization	Calculation of all prime factors in a number. Example: The prime factors of 84 are 7 x 3 x 2 x 2.

Prime Number	any integer that cannot be divided by another number evenly except by itself and 1; two is the smallest prime number Example: "2, 3, 5, 7, 11, 13"

Prism	A solid with bases that are parallel, congruent polygons and sides that are parallelograms.

Probability	The possibility that an event will occur, as expressed by the ratio of the number of actual occurances to the total of possible occurances.

Product	the number that results by multiplying two or more numbers together Example: 8 x 8 = 64 64 is the product

Proper Factor	Any whole-number factor of a number except the number itself. Example: For example, the factors of 10 are 1, 2, 5, and 10. The proper factors of 10 are 1, 2, and 5.

Proper Fraction	A fraction with a numerator less than the denominator. Example: Proper: 1/2 Improper: 2/1

Pyramid	a shape with a polygonal base and triangular sides meeting at a common point (vertex)

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