QUADRILATERAL

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Across
  1. 2. one pair of opposite side parallel
  2. 5. diagonals are equal and they bisect
  3. 7. all sides equal and each angle 90
  4. 8. diagonals bisect each other
Down
  1. 1. a four sided polygon
  2. 3. trapezium with non parallel sides equal
  3. 4. two pairs of adjacent sides equal
  4. 6. diagonal divides into two congruent triangles
  5. 9. diagonals bisect at right angles and are not equal