Shapes

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Across
  1. 3. Four sides are all equal each other and the angles are all 90°
  2. 4. The four corners are angled parallelogram
  3. 5. Two sides parallel
  4. 7. It is a simple (non self intersecting) quadrangle with two pairs of parallel edges
Down
  1. 1. The bottom of the cone
  2. 2. Four sides
  3. 5. Three sides
  4. 6. A quadrangle equal on all sides