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algebraic proof

use of definitions, axioms, and deductive reasoning to prove algebraic assertions

altitude

in reference to a triangle, the perpendicular distance from either the base of the triangle or an extension of the base to the opposite vertex; any side can be the base

angle

the figure formed by two rays that have a common endpoint; the rotation of a ray about its endpoint from an initial position to a final position

area

the number that tells how many square units are contained in a closed figure

associative property

for any real numbers a, b, and c, (a + b) + c = a + ( b + c) and

(a • b) • c = a • (b • c)

(a • b) • c = a • (b • c)

average

the sum of a set of numbers divided by the number of numbers in the set; also called the mean

axiom

a statement that is assumed to be true; also called a postulate

basic arithmetic operations

addition, subtraction, multiplication, and division

binomial

a polynomial of two terms

box-and-whisker plot

a method of displaying data using two rectangles called "boxes" and lines on the ends of the boxes called "whiskers" to divide a set of data into four equal or approximately equal groups