Across
- 2. decimal number you can't write as simple fraction
- 4. closed, round shape
- 6. curved surface that looks like a ball
- 7. 3D figure that has two parallel circular faces
- 8. amount of space occupied by a 3D figure
- 10. comparison of two numbers
- 12. Their birthday is March 14
- 13. month Pi Day is celebrated
Down
- 1. branch of math that deals with lines, points, etc.
- 3. did the first calculation of pi
- 5. total length around the outside of a closed figure
- 9. line that passes through the center of a circle
- 11. ratio of the circumference of a circle to its diameter