Across
- 5. A polygon with four sides
- 8. A triangle which all vertices of it lies on the circle
- 9. A circle that passes through all the vertices of the polygon
- 11. A plane figure with five straight sides and five angles
- 13. A triangle that has two sides of equal length
- 14. A plane figure with eight straight sides and eight angles
- 16. The center of the incircle of a triangle
- 17. A plane figure with twelve sides
Down
- 1. A plane figure with six straight sides and angles
- 2. A plane figure with four equal straight sides and four right angles
- 3. A triangle that has all its sides of the same length
- 4. A plane figure with three straight sides and three angles
- 6. The intersection of the three medians of the triangle
- 7. A plane figure with seven straight sides and angles
- 10. A polygon that is equiangular and equilateral
- 12. A plane figure with ten straight sides and angles
- 15. A plane figure with nine straight sides and nine angles
