Geometry Crossword Puzzle

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Across
  1. 2. A triangle with no equal sides
  2. 4. A triangle with all equal sides
  3. 7. An angle more than 90°
  4. 11. The distance around a shape
  5. 12. A triangle with two equal sides
  6. 13. Pyramid with a square base
  7. 14. the distance across a circle
  8. 16. Pyramid with a triangle base
  9. 18. the distance from the end of a circle to the center
  10. 19. An angle that is exactly 90°
Down
  1. 1. Prism with a triangle base
  2. 3. line segments that never intersect
  3. 5. six sided figure with all equal sides
  4. 6. the amount of space an object takes up
  5. 8. Two or more shapes combined to make a more complex shape
  6. 9. unfolded version of a three dimensional figure
  7. 10. area of all the faces added up
  8. 15. the distance around a circle
  9. 17. An angle less than 90°
  10. 18. Prism with a rectangle base