geometry

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Across
  1. 5. angle The angle that is less than 90 degrees
  2. 8. An eight sided shape
  3. 9. A seven sided shape
  4. 13. The line going through parallel lines
  5. 14. A triangle with zero sides equal
  6. 16. A triangle with all sides being equal length
  7. 18. angles Angles that are on opposite sides of each other
  8. 19. angle The angle that is over 90 degrees
  9. 20. A shape that needs at least three sides
Down
  1. 1. A nine sided shape
  2. 2. A six sided shape
  3. 3. angle The angle reaching exactly 90 degrees
  4. 4. A ten sided shape
  5. 6. lines Lines that intersect making four right angles
  6. 7. Two rays that start from the same point
  7. 10. angle An angle at exactly 180 degrees
  8. 11. A line starting from a point
  9. 12. A triangle with two sides equal
  10. 15. A five sided shape
  11. 17. lines Lines that will never touch