Across
- 2. having identical shapes and size (for angles, shapes, line segments, etc.)
- 7. divide into two equal parts
- 9. two lines which never intersect
- 10. four sided polygon
- 11. amount of space in a two dimensional shape
- 14. a line of points which extends indefinitely in two directions
- 15. angle less than 90 degrees
- 17. five-sided polygon
- 19. a plane figure with at least three sides
- 20. at least one diagonal of the figure passes outside of the figure
- 21. legnth of the path around a two dimensional shape
Down
- 1. each angular point of a polygon or polyhedra
- 3. angle greater than 90 degrees
- 4. a 90 degree angle
- 5. a line bound by two endpoints
- 6. two lines which intersect at right angles
- 8. a line with one endpoint that extends in the other direction indefinitely
- 12. any two sides of a polygon with a common vertex
- 13. no diagonals cross outside of the figure
- 16. six-sided polygon
- 18. three-dimensional shape composed of flat polygonal faces with straight edges and sharp vertices