Geometry Puzzle

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Across
  1. 2. five sided polygon
  2. 4. three sided polygon
  3. 6. quadrilateral with one pair parallel lines
  4. 7. quadrilateral with 4 equal sides
  5. 11. opposite sides equal & 4 right angles
Down
  1. 1. six sided polygon
  2. 3. quadrilateral with opposite sides parallel
  3. 5. four sided polygon
  4. 8. ten sided polygon
  5. 9. 4 equal sides and right angles
  6. 10. eight sided polygon