Shapes and Locations Crossword Puzzle

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Across
  1. 4. at the back of
  2. 6. 6 sides
  3. 8. higher, on top of
  4. 9. 3 sides
Down
  1. 1. ahead of
  2. 2. 4 sides of the same length
  3. 3. 4 sides, 2 short, and 2 long
  4. 4. next to
  5. 5. under
  6. 7. round shape, no straight sides