triangles or somthing

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Across
  1. 6. the kind triangle we are working with
  2. 9. Opposite Over Hypotenuse
  3. 10. the type of triangle where all sides are the same
  4. 12. what you use to solve angles
  5. 14. Adjacent Over Hypotenuse
  6. 16. the shape we are learning about
  7. 17. the type of angle made when two lines intercept
  8. 18. creators name
Down
  1. 1. the shape that is made to show an angle is 90 degrees
  2. 2. The diagonal of the triangle
  3. 3. a type of right triangle (45-45-90, 30-60-90)
  4. 4. when a graph is U shaped
  5. 5. the corner of two lines in a triangle
  6. 7. Opposite Over Adjacent
  7. 8. the three variables present in standard form of a parabola
  8. 11. The second word in the term for when all sides of a triangle are positive integers (3,4,5 - 6, 8, 10 etc)
  9. 13. this is multiplied with x at the hypotenuse of a 30-60-90 triangle
  10. 15. Our math teacher; a type of peanut butter; captain of a boat