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# 2013-8thMathPTVocab3

### SHMS 8th Grade Math Powertime Vocab 3

TermDefinition
Altitude of a Triangle The perpendicular distance between a vertex of a triangle and the side opposite that vertex. Sometimes called the height of a triangle. Also, sometimes the line segment itself is referred to as this.
Base (of a Polygon) It can be any side for two-dimensional figures. Typically, however, it is the bottom side, on which the polygon "sits".
Cubed Root One of three identical factors of a number that is the product of those factors.
Diameter The distance across a circle through its center. The line segment that includes the center and whose endpoints lie on the circle.
Hypotenuse It is the side of a right triangle that is directly across from the right angle.
Leg of a Triangle Either of the two shorter sides of a right triangle. These two sides together form the right angle in the right triangle.
Perfect Cubes In arithmetic and algebra, the cube of a number n is its third power. It is the result of the number multiplying by itself three times.
Pythagorean Theorem A theorem that states that in a right triangle, the square of the length of the hypotenuse equals the sum of the squares of the lengths of the legs. a^2 + b^2 = c^2
Pythagorean Triples A set of positive integers, a, b, and c that fit the rule a^2 + b^2 = c^2.
Radius The distance from the center of a circle to any point on the circle. Also, the line segment that has the center of the circle as one endpoint and a point on the circle as the other endpoint.
Right Triangle A triangle with exactly one right angle.
Volume The amount of space occupied by an object.
Domain It is the set of all x-coordinates of the ordered pairs of a relation.
Function A rule of matching elements of two sets of numbers in which an input value from the first set has only one output value in the second set.
Range The set of all output values or the y-values of a function or a relation.
Created by: hbogue