Shapes

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Across
  1. 3. The length of a line from one side of the circle to another
  2. 4. A shape with only one side
  3. 5. The distance around the edge of
  4. 7. A shape whose opposite sides are parallel
  5. 8. The amount of space inside a shape
Down
  1. 1. A solid shape that has 6 identical square faces
  2. 2. The length of the edge around the circle
  3. 6. The length of a line from the middle of the circle to the edge