Triangle Congruency Crossword Puzzle

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Across
  1. 1. Angle Side Similarity/two angles and a side opposite
  2. 3. corresponding parts of congruent triangles are congruent
  3. 4. create two congruent sides
  4. 8. Leg the hypotenuse and any one leg of a right angle
  5. 9. sum theorem sum of the measures of the angles of a triangle is 180
  6. 11. Side Side Similarity/three pairs of congruent sides
  7. 12. triangles triangles with the same size and shape
  8. 15. Angles have parallel lines
  9. 17. angle theorem exterior angle formed by extending any one side of the triangle
  10. 18. Bisector creates two congruent sides
  11. 19. Angle Side Similarity/two sides and an included angle
Down
  1. 1. line segment through a vertex and perpendicular to a line containing the base
  2. 2. Proportionality Theorem/line is parallel to one side of a triangle and it intersects the other two sides, then it divides those sides proportionally
  3. 5. Property a side that's congruent to itself
  4. 6. Sides/same two angle pairs
  5. 7. Mean/multiply the numbers together and then take a square root
  6. 10. all sides with equal length
  7. 13. triangle with two equal sides
  8. 14. Side Angle Similarity two angles and a side
  9. 16. Triangles with Angle Bisector Theorem