Pythagoras/ Trigonometry

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Across
  1. 2. completely different
  2. 4. 3 sided shape
  3. 6. angle of looking up
  4. 9. longest angle of a triangle
  5. 10. 90 degrees
  6. 12. sine for short
Down
  1. 1. Greek philosopher
  2. 3. measure triangles
  3. 5. Greek word for angle
  4. 7. common vertex
  5. 8. angle of looking down
  6. 11. tan for short