| A | B |
| ratio | a comparison of two quantities, often written as a fraction |
| rate | a ratio in which two quantities with different units of measure are compared |
| unit rate | a rate in which the second number in the comparison is one unit |
| proportion | a pair of equal ratios |
| cross product | for two ratios, the product of the top value from one and the bottom value from the other |
| similar | figures having the same shape but possible different sizes |
| congruent | having the same size and shape |
| equation | a mathematical sentence stating that two expressions are equal |
| product | the result of multiplying numbers |
| quotient | the result of dividing one number by another |