Across
- 1. a 1 dimensional shape with a starting point, but no ending
- 8. the center point of a line
- 9. the size of a 2 dimensional shape
- 11. angle less than 90 degrees
- 14. a statement that needs to be proven
- 15. a 9-sided polygon
- 17. a 10-sided polygon
- 18. a statement that is taken to be true
- 19. when two lines intersect at a single point
- 20. a quadrilateral with one pair of paralell sides
- 21. the opposite of a theorum
Down
- 2. the figure formed when two lines meet
- 3. an 8-sided polygon
- 4. a 12-sided polygon
- 5. triangle with no equal sides
- 6. a 2 dimensional infinite shape
- 7. a quadrilateral wehere every angle is 90*, and all the sides are equal
- 10. perpendicular line from a vertex to the opposite side
- 12. a line that crosses at least two other lines
- 13. a quadrilateral with two pairs of paralell sides
- 16. a line from the center of a shape to any side at a 90* angle
- 19. a 1 dimensional infinite shape