geometry

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Across
  1. 2. angle below 90
  2. 7. equals 180 degrees
  3. 10. two angles with a side in between
  4. 12. opposite over adjacent
  5. 15. circumference equation
  6. 17. two sides with an angle in between
  7. 19. best math teacher
  8. 20. two lines that intersect to make 90 degrees
Down
  1. 1. angle above 90
  2. 3. a triangle with all equal sides
  3. 4. adjacent over hypotenuse
  4. 5. opposite over hypotenuse
  5. 6. a shape with one set of parallel sides
  6. 8. the Egyptians built them
  7. 9. soh cah toa
  8. 11. angle that is 90
  9. 13. area of a circle
  10. 14. shape with all equal sides
  11. 16. three equal sides
  12. 18. middle of a line