puzzle

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Across
  1. 2. ( looks like a slanted rectangle but depth)
  2. 5. ( radious but better)
  3. 7. (360 degrees)
  4. 11. ( square recatngle and whatever has 4 sides i guess)
  5. 12. (the space inside)
  6. 16. ( 90% of shapes that have sides)
  7. 17. ( half scircle)
  8. 18. (square but better)
Down
  1. 1. but more circular)
  2. 3. ( i confuse it with perpendicular)
  3. 4. ( scircle but witha point)
  4. 6. ( wide scircle)
  5. 8. ( equal but not)
  6. 9. ( 1/3 triangle)
  7. 10. (3 sides)
  8. 13. ( half line)
  9. 14. (in between 2 lines)
  10. 15. ( plain)
  11. 18. ( kite?)
  12. 19. (all of base)