Across
- 4. the only three sided polygon
- 6. line from the center to edge of circle
- 7. a one dimension
- 9. portion inside the closed line segments
- 10. extends infinitely on both sides
- 12. sum of all the sides
- 13. a curved line
Down
- 1. the outer boundary
- 2. the least
- 3. a zero dimension
- 5. the longest chord in a circle
- 8. at the most
- 11. the outer limits