| A | B |
|---|
| Density Property | the property that states that between any two real numbers, there is always another real number |
| irrational number | a number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal |
| perfect square | a square of a whole number |
| principal square root | the nonnegative square root of a number |
| rational number | any number that can expressed as a ratio of two integers |
| real number | a rational or irrational number |
| reciprocal | one of two numbers whose product is 1, also called multiplicative inverses |
| relatively prime | two numbers are called this if their greatest common factor is 1 |
