Vocabulary Crossword 1

The distance of a number from zero on the number line. Always positive.
(a + b) + c = a + (b + c), where a, b, and c stand for any real numbers.
The side of a polygon that is perpendicular to the altitude or height.
One of two properties that applies to addition and multiplication but not to subtraction and division
A number with a value that is always the same. In 5x+4, four is the ________
A numerical factor in a term of an algebraic expression. In 9x+3, nine is the _________.
A 2-dimensional system in which the coordinates of a point are its distances from two intersecting, usually perpendicular, straight lines called axes.
A rectangular solid having six congruent square faces.
A variable whose value is determined by the value of the related independent variable.
a × (b + c) = (a × b) + (a × c) and a × (b – c) = (a × b) – (a × c), where a, b, and c stand for any real numbers.
In the set {45,78,98, 99, 129}, 98 is the ________________.