triangle congruence

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Across
  1. 6. has 3 angles and lines
  2. 7. the space between 2 intersecting lines
  3. 8. this type of triangle has a right angle
  4. 10. the longest side of a right triangle
  5. 11. a human has 2 of these
  6. 12. abbreviated by ASA in geometry
  7. 13. abbreviated by SAS in geometry
  8. 14. another way of saying excluded
  9. 15. contained as part of a whole
  10. 16. abbreviated by AAS in geometry
Down
  1. 1. abbreviated by SSS in geometry
  2. 2. Objects that have the same shape and size are said to be congruent
  3. 3. a theorem in geometry abbreviated by HL
  4. 4. identical in form
  5. 5. all shapes have these
  6. 9. have a close similarity