Across
- 2. distance from the center to the edge of a circle
- 5. opposite acute angles are equal
- 7. a round plane figure
- 10. distance around a circle
- 12. angle more that 90 degrees
- 13. highest point
- 14. middle of a figure
- 15. firm and stable in shape
- 18. slide
- 19. a surface where one side is higher than another
Down
- 1. has three straight sides and angles
- 3. made up of exactly similar parts
- 4. any of the individual surfaces of a solid object
- 6. an angle less than 90 degrees
- 8. farthest away from the center of something
- 9. a four sided figure
- 10. a straight line connecting two points on a curve
- 11. turn
- 16. at least three straight sides and angles
- 17. straight line going through a circle