geometry

1234567891011121314151617181920
Across
  1. 6. 90 degrees
  2. 7. created by angle bisectors
  3. 9. y-y1=m(x-x1)
  4. 10. flips the hypothesis and conclusion
  5. 11. where the sides intersect
  6. 12. two supplementary angles that form a straight line
  7. 13. three pairs of congruent sides
  8. 14. if a=b, then b=a
  9. 17. 180 degrees
  10. 19. have the same slope
  11. 20. congruent angles across from each other
Down
  1. 1. the longest leg of the triangle
  2. 2. created by perpendicular bisectors
  3. 3. negates and flips the hypothesis and conclusion
  4. 4. corresponding parts of congruent triangles are congruent
  5. 5. have negative reciprocal slopes
  6. 8. negates the hypothesis and conclusion
  7. 15. two congruent sides(legs)
  8. 16. a=a
  9. 18. a flat surface made up of points