Tessellation

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Across
  1. 1. corners of a shape
  2. 4. 3-Dimensional square
  3. 5. shape with more than 3 sides
  4. 7. very old
  5. 8. language of Rome
Down
  1. 2. pattern of shapes with no gaps
  2. 3. upper interior part of a room
  3. 6. cover partly