Geometry Crossword Puzzle

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Across
  1. 1. +
  2. 5. a^2+b^2=c^2
  3. 8. _
  4. 15. ~p -> ~q
  5. 17. •
  6. 19. same shape and size
  7. 20. •—>
  8. 22. /
  9. 24. |
  10. 25. polygon with eight sides
  11. 26. -
  12. 28. •—-•
  13. 29. triangle with no equal sides
Down
  1. 2. Two of these are always supplementary to eachother
  2. 3. perimeter of a circle
  3. 4. If it is raining, then the ground is wet.
  4. 6. /
  5. 7. a quadrilateral with only one pair of parallel sides
  6. 9. has four sides
  7. 10. /
  8. 11. All cats are mammals and a tiger is a cat, so a tiger is a mammal.
  9. 12. \__
  10. 13. q -> p
  11. 14. My bus has always been late on Tuesdays. Today is Tuesday, so my bus will be late.
  12. 16. ~q -> ~p
  13. 18. 2(l+w)
  14. 21. l*w
  15. 23. /_
  16. 27. <——>