I-Search Puzzle

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Across
  1. 2. A direction that an object can exist in
  2. 5. Aristotle's treatise that acknowledged the 3D plane
  3. 7. A 4-dimensional cube
  4. 8. The man who popularized the intergration of higher dimensions into mathematics
Down
  1. 1. Relating to time
  2. 3. A theory that suggests a universe of 10 dimensions
  3. 4. Relating to space
  4. 6. A small subsection of a larger universe