Shape

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Across
  1. 4. Square sibling's
  2. 6. The shape of your bottle
  3. 8. Shape without side
  4. 9. The shape of our planet
Down
  1. 1. Often fly in the sky
  2. 2. Have 3 sides
  3. 3. Circle cousin's
  4. 5. Square but in 3 dimentions
  5. 7. Spongebob pant's
  6. 8. Ice cream (you can eat it)