2D and 3D Shapes

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Across
  1. 4. it has 4 straight sides. each pair of opposite sides are of equal length
  2. 6. it has only one curved side and has no corners
  3. 7. it has 2 faces and the same number of edges and vertices
  4. 8. it has 3 faces and 2 edges with no vertices
Down
  1. 1. it has 4 corners and 4 straight sides of the same length
  2. 2. it has no faces, edges and vertices
  3. 3. it has 3 corners and 3 straight sides
  4. 5. it has 12 edges and 6 faces with the different length of opposite sides
  5. 7. it has 6 faces, 12 equal edges and 8 vertices