Across
- 1. a three-sided polygon with a sum of 180° in the angle measures
- 3. lines that intersect at a 90° angle
- 5. when two figures are the same shape and have proportional sides and congruent angles
- 7. the distance around a circle
- 9. lines that are equal distance from each other at all points and never intersect
Down
- 2. the distance from the center of the circle to a point on the circle
- 4. the distance from one endpoint to another that passes through the center of a circle
- 6. the covering of a two-dimensional shape; square units
- 8. figures having the same size and shape