Across
- 5. with 4 vertices and 4 edges
- 8. an triangle with two sides of equal length
Down
- 1. a 10 sided polygon or 10-gon
- 2. perimeter of circle and ellipse
- 3. an angle more then 90 less then 180 degree
- 4. having sides unequal length
- 6. defined euclidean geometry as the ratio of a circle
- 7. two lines that meet at a right angle