Jun and Zak's crossword

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Across
  1. 7. value of y when x=0
  2. 10. rise/run
  3. 11. value of x when y=0
  4. 12. a number multiplied by itself
  5. 13. sin theta= a/h
  6. 14. cannot be expressed in a fraction
  7. 15. The length of the side opposite the angle divided by the length of the adjacent side.
  8. 16. close to being another triangle
  9. 18. if one shape can be another/having the exact sides
  10. 19. numbers left in square root form
  11. 20. close to being another
Down
  1. 1. a2+b2=c2
  2. 2. (x1+x2/2,y1+y2/2)
  3. 3. longest side of a triangle
  4. 4. the angle going upwards
  5. 5. closest side to an angle
  6. 6. if all three sides are the same
  7. 8. the angle going downwards
  8. 9. the gradient of x and y
  9. 17. angle between two sides