When you have a quotient and a remainder.

a/b = -a/-b and -a/b =
a/-b = - a/b.

A numerical value by which a variable is multiplied. (Chapter 8)

An equation stating that two fractions are equal.

If a=b and c does not equal 0, then
a/c=b/c.

Two numbers whose product is 1.
(Chapter 7)

The ability to obtain an answer to a proportion without
solving an equation.

If A and B are quantities with the same units, then A/B compares A to B.

A triangle in which all sides are different lengths. (Chapter 4)

an integer A divided by an integer B in which there is an integer quotient Q and a remainder R with A = BQ + R and 0 + R < B.

In any true proportion, the product of the means = the product of the extremes.

The smallest figure whose congruent images make up a tessellation?
(Chapter 6)

Ratios are formed by dividing one quantity by
another with the same unit.

For any real numbers x and y: If x < y
and a is positive, then x/a < y/a. For any real numbers x and y: If x < y
and a is negative, then x/a > y/a.

Events that cannot occur at the same time.
(Chapter 5)