Shapes

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Across
  1. 3. Four equal sides and unequal diagonals
  2. 5. No right angle and opposite angles are equal
  3. 6. 3D shape with only one vertex
Down
  1. 1. A three-sided polygon
  2. 2. Total surface area equals six times area of one face
  3. 4. A quadrilateral with only 2 opposite parallel sides