Do you know your shapes?

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Across
  1. 5. A quadrilateral with 4 equal sides and 90 degree angles.
  2. 7. A quadrilateral with one pair of equal sides and two sides parallel.
  3. 9. A shape with one continuous side.
  4. 10. A shape with 8 equal sides.
  5. 11. A shape with two pairs of adjacent sides equal.
Down
  1. 1. A quadrilateral with two pairs of parallel sides.
  2. 2. A shape with 5 equal sides.
  3. 3. A shape with 6 equal sides.
  4. 4. A quadrilateral with 4 equal sides, but the angles are not 90 degrees.
  5. 6. A shape with three sides.
  6. 8. A quadrilateral with two pairs of opposite sides equal and 90 degree angles.