Tic Tac Toe Project

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Across
  1. 3. intersect to form a 90 angle
  2. 4. same shape and size
  3. 6. A triangle that all sides are different lengths
  4. 8. a triangle where only 2 sides are equal
  5. 10. Space covering the outside of a 3D shape
  6. 13. angles that add up to 180
  7. 14. lines never intersect
  8. 16. tan,sin,cos
  9. 18. A^2+B^2=C^2
  10. 19. longest side in a triangle
  11. 20. A quadrilateral with only 1 pair of parallel sides
Down
  1. 1. angles that add up to 90
  2. 2. angles across from each other when in an X
  3. 5. mirrored across an axis
  4. 7. up 3 left 6
  5. 9. 2pir
  6. 11. A quadrilateral with 2 pairs of parallel sides
  7. 12. proves 2 triangles are similar with 3 sides
  8. 15. proves 2 triangles similar with 2 sides and an angle in middle
  9. 17. angles that create a straight line