| A | B |
| corresponding sides | sides that are in the same position in different plane figures |
| circumference | The distance around a circle |
| Area of a circle | the number of square units inside that circle |
| corresponding angles | angles that have the same relative positions. |
| calculate | to make a mathematical computation. |
| denominator | The bottom part of a fraction |
| divisible | when the quotient is a whole number and the remainder is zero |
| equivalent ratios | ratios that name the same comparisons |
| reciprocal | Two numbers whose product equals 1. |
| radius | the distance from the center of a circle to a point on the circle. |
| proportion | an equation stating that two ratios are equa |
| Scale factor | ratio between corresponding sides of similar figures |
| similarity ratio | ratio between corresponding sides of similar figures |