Across
- 4. extending across
- 9. "SSS"
- 10. 2piR^2
- 12. middle
- 13. center
- 16. 90 degrees
- 17. half diameter
- 18. chance
- 20. movement
Down
- 1. equal opposite angles formed by intersection
- 2. 3d circle
- 3. mirrored
- 5. space of object
- 6. intersect at 90 degrees
- 7. addition
- 8. new size
- 11. equal
- 14. never touch
- 15. space in object
- 19. an angle