Across
- 4. A seven-side figure
- 5. A four-side figure
- 6. A six-side figure
- 7. An angle less than 90 degrees
- 8. A shape with three sides
- 10. half of a line with one or two points
- 11. either of two angles whose sum is 90 degrees
- 13. An angle of more than 90 degrees
- 14. A ten-side figure
Down
- 1. either of two angles whose sum is 180°.
- 2. A shape with no sides
- 3. A eight-side figure
- 9. A five-side figure
- 12. half of a diameter