Across
- 2. lines intersect at right angle
- 5. vertical angles equal
- 6. a line half way through a circle
- 8. add up all the sides
- 15. two angles, sum equals 90 degrees
- 18. inside a shape
- 19. rotate a certain degree
- 20. 2 lines that don't intersect
- 21. equal, across from each other
Down
- 1. quadrilateral with a pair of parallel sides
- 3. interior same side on 2 lines
- 4. a triangle that has al1 different sides
- 7. the sum of 2 angles, 180 degrees
- 9. ratio
- 10. a transformation turning a figure
- 11. exterior equal to eacother
- 12. both sides line up with each other
- 13. interior add to 180
- 14. a straight line through center of a circle
- 16. all sides of equal lengths
- 17. 2 angles that form a straight line