triangle and its properties

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Across
  1. 3. triangle with two equal sides
  2. 5. angle angle of 90 degree
  3. 6. angle more than 90 degree
  4. 8. triangle with equal sides
  5. 9. triangle with one of its angle is 90 degree
  6. 10. traingle with unequal sides
Down
  1. 1. triangle with all its angle less than 90 degree
  2. 2. triangle with one of its angle more than 90 degree
  3. 4. closed figure made of three line segment
  4. 7. angle less than 90 degree