Across
- 3. Lines that go in the same direction but don't intersect or touch
- 7. A figure with four sides
- 9. A quadrilateral with two pairs of parallel sides
- 13. The total length of a figures boundary
- 15. A one-dimensional figure with just length no width
- 16. The distance around the boundary of a circle
- 19. A triangle that has two equal sides and angles
- 20. Reasoning using opinions or observations
- 21. An angle more than 90 degrees and less than 180 degrees
Down
- 1. An angle that is exactly 90 degrees
- 2. Two objects that are the same in shape or is a mirror of a shape
- 4. A figure that is formed by a ray or a line that shares a common endpoint
- 5. The amount of space in a two-dimensional figure
- 6. A figure with four equal sides
- 8. A quadrilateral whose opposite sides are equal and parallel
- 10. An angle that is less than 90 degrees
- 11. A triangle that has all sides equal in length
- 12. Reasoning using Facts or Axioms
- 14. Two lines that meet or intersect at right angles
- 17. An example that disproves a theory or proposition
- 18. A six-sided Polygon