Geometry vocab crossword puzzle

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Across
  1. 4. all sides equal
  2. 7. angles next to each other
  3. 8. all angles equal
  4. 10. then part of if/then statements
  5. 11. reversed if/then statements
  6. 13. where 3 altitudes cross
  7. 14. where 3 angle bisectors cross
  8. 18. angles that make a 180 degree angle
  9. 19. if part of if/then statements
  10. 20. all parts different
Down
  1. 1. where 3 perpendicular bisectors cross
  2. 2. 2 sides equal
  3. 3. where 3 medians cross
  4. 5. opposite sides inside
  5. 6. lines that will never touch
  6. 9. angles that make a 90 degree angle
  7. 12. angles that share a vertex
  8. 15. flipped if/then statements
  9. 16. opposite sides outside
  10. 17. same place different intersection