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Math Dictionary
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Found 24 Terms

parabola
A plane curve generated by a point moving so that its distance from a fixed point is equal to its distance from a fixed line; the intersection of a right circular cone with a plane parallel to an element of the cone.

parallel lines
Lines with no common points and always the same distance apart.

parallelogram
A four-sided polygon with opposite sides equal and parallel and containing no right angles.

path
A line connecting nodes (points)in a network.

pentagon
A polygon with five sides and five angles.

pentomino
A plane shape made of five congruent squares connected to each other by at least one common side.

percentage
A quantity expressed in hundreths (%).

perfect number
A number which is the sum of its factors excluding itself (e.g., 6 = 1 + 2 + 3).

perimeter
The length of the distance around the boundary of a shape.

perpendicular line
A line at right angles to another line or plane.

pi
Approximately 3.14. The ratio of the circumference of a circle to its diameter.

pie graph
A circular graph in which sectors of a circle are used to show information.

place value
Indicates the position of a numeral (e.g., the place value of the 3 in the number 357 is hundreds).

polygon
A two-dimensional shape with three or more straight lines.

polyhedron (plural - polyhedra)
A three-dimensional shape with plane faces.

prime factor
A prime number that will divide exactly into another number (e.g., 2 and 3 are prime factors of 6).

prime number
A number with only two factors, 1 and itself.

prism
A three-dimensional shape with at least one pair of opposite faces which are congruent and parallel.

product
The result when two or more numbers are multiplied (e.g., the product of 2, 3 and 4 is 2 x 3 x 4 = 24).

proper fraction (vulgar or common)
A fraction in which the numerator is less than the denominator.

property
An attribute of a two-dimensional or three-dimensional shape.

proportion
A statement of equality between two ratios.

protractor
A semi-circular or circular instrument for measuring angles.

pythagorean theorem
In any right triangle, the square of the hypotenuse is equal to the sum of the squares of the sides.