Geometry Crossword

12345678910111213141516171819
Across
  1. 1. one pair of parallel sides
  2. 4. shape with angles that add up to 180 degrees
  3. 9. 1/2(b)(h)
  4. 11. 2πr
  5. 12. the second thing in SOH CAH TOA
  6. 15. Chuck ate 50% of his taco
  7. 16. πr^2
  8. 18. double the radius
  9. 19. the class Mrs. Day teaches
Down
  1. 2. two pairs of parallel sides
  2. 3. 3.1415...
  3. 5. all sides are equal
  4. 6. units squared
  5. 7. half of the diameter
  6. 8. last thing in SOH CAH TOA
  7. 10. a name for a 3d shape
  8. 13. units cubed
  9. 14. the first thing in SOH CAH TOA
  10. 15. a^2+b^2=c^2
  11. 17. goes 360 degrees around