Triangles

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Across
  1. 1. corresponding parts of congruent triangles
  2. 5. right angle hypotenuse side
  3. 6. space between two rays
  4. 7. three sided closed figure
Down
  1. 2. is two figures being equal
  2. 3. information already provided
  3. 4. side side side
  4. 8. angle side angle