Papi's crossword

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Across
  1. 2. the endpoint of the ray
  2. 4. a unit of angle
  3. 5. a circle with a radius of one
  4. 7. a place in value
  5. 10. smallest angle of terminal side
  6. 13. an equation relating to lengths of triangle
  7. 15. opposite over adjacent
  8. 16. measure of angle
  9. 18. adjacent over hypotenuse
Down
  1. 1. hypotenuse over opposite
  2. 3. hypotenuse over adjacent
  3. 4. what makes the number cancel out
  4. 6. longest side of triangle
  5. 8. te position after rotation of the ray
  6. 9. law to find area of triangle and sides
  7. 11. adjacent over opposite
  8. 12. distance between x axis to top of wave
  9. 14. the ratio of the length of the side opposite to the hypotenuse
  10. 17. 3.14, never ending number