Triangle Congruence Crossword Puzzle

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Across
  1. 3. a triangle with one angle at 90 degrees
  2. 6. longest side of a right-angled triangle
  3. 8. specific part of a polygon between 2 other specified parts
  4. 10. shows that 2 figures are identical in shape and size
  5. 12. opposite of included
  6. 13. fundamental flat, 3 sided shape
  7. 15. theorem for 2 triangles are congruent
Down
  1. 1. theorem for proving 2 sides are congruent
  2. 2. matching parts with the same position
  3. 4. 2 angles and a adjacent side are congruent
  4. 5. 2 figures with same shape and size
  5. 6. 2 right angles are the same shape and size
  6. 7. a bounding line, surface,or edge
  7. 9. 1 of the 2 sides that form a right triangle
  8. 11. figure formed when 2 lines meet
  9. 14. geometric theorem if all sides of a triangle are equal