Geometry puzzle

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Across
  1. 1. quadrilateral in which diagonals are perpendicular bisector
  2. 7. angle less than right angle
  3. 8. triangle having all sides different
  4. 10. triangle having two equal angles
  5. 11. two lines having 90 angle between them
  6. 13. angle equal to 90
Down
  1. 2. parallelogram having all sides equal
  2. 3. quadrilateral having all angles 90
  3. 4. triangle having all angle 60
  4. 5. quadrilateral having one pair opposite side parallel
  5. 6. quadrilateral in which diagonal bisect each other
  6. 9. quadrilateral in which diagonals are perpendicular to each other
  7. 12. angle less than straight angle