Across
- 6. an arrow that ends at one point and goes on forever on the other side
- 8. a line that separates one angle into two congruent angles
- 12. Something that shows a statement is wrong
- 15. no sides of the triangle are the same
- 16. a shape with 5 sides
- 18. A proven statement that proves a statement
- 19. an angle that is greater than 90 and less than 180
- 20. lines that meet at a right angle
Down
- 1. a shape with 9 sides
- 2. an angle that is less than 90 degrees
- 3. the length of all sides added up
- 4. A statement that is used as reasoning
- 5. two sides of the triangle are congruent
- 7. the angle is 90 degrees
- 9. the perimeter of a triangle
- 10. a shape with 8 sides
- 11. the middle of a line
- 13. all sides of the triangle are congruent
- 14. lines that have the same slope and never meet
- 17. equal or the same