Across
- 5. Polygon with six sides
- 7. Intersecting lines that cross at a 90 degree angle
- 8. Three-sided polygon with one 90 degree angle
- 12. A three-sided polygon with no sides of equal length
- 13. An angle that is larger than 90 degrees
- 17. A part of a line that has two endpoints
- 18. A three sided polygon with one pair of equal length sides
- 19. A closed shape with straight sides
- 20. A line that extends to infinity in both directions
Down
- 1. Lines in the same plane that never touch each other
- 2. A triangle with three sides of equal length
- 3. Two lines that cross each other
- 4. A three sided polygon with all angles less than 90 degrees
- 6. An angle that is less than 90 degrees
- 9. Polygon with five sides
- 10. A unit used to measure angles
- 11. A triangle with one angle that is more than 90 degrees
- 14. Polygon with eight sides
- 15. A quadrilateral with 1 pair of parallel sides
- 16. An angle that is exactly 90 degrees