Across
- 2. Angles that sum to 90
- 10. A flat surface
- 11. The number of sides in an octagon
- 13. When a shape has equal angles
- 14. (x,y)->(-y,x) is an example of this
- 15. The point at which to sides of a shape meet
- 16. The line that cuts two parallel lines
- 18. Two or more shapes that have corresponding sides in the same proportion
- 20. A shape has this when it can be reflected on top of itself
- 21. Two shapes that are identical
- 23. A 6-sided figure
Down
- 1. A type of non-ridid transformation
- 3. Formed when lines intersect at right angles
- 4. ASA, SAS, or AAS for example
- 5. When two angles sum to 180
- 6. The distance from one side to the opposite vertex of a triangle
- 7. Inverse, contrapositive, and this
- 8. A shape that is equiangular and equilateral
- 9. A line with two endpoints
- 12. Coplanar lines that do not intersect
- 17. A triangle with three unequal sides
- 19. A line with one endpoint
- 22. The point (0,0) on the coordinate plane