Across
- 2. rectangle circle
- 7. scalene
- 8. Circumference
- 11. prism
- 14. acute chord
- 15. diameter rhombus
- 16. square
- 17. polygon
- 20. Collinearity
- 21. Oblique
Down
- 1. IntersectingLineSegments
- 3. Degenerate
- 4. angle
- 5. Lines
- 6. decagon
- 9. polyhedron
- 10. square Quadrilateral
- 12. Perpendicular
- 13. supplementary
- 18. Vertex ScaleneTriangle
- 19. kite