Geometry crossword puzzle

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Across
  1. 2. pentagon
  2. 6. rotation
  3. 8. elevation
  4. 10. rectangular prism
  5. 11. rhombus
  6. 12. degrees
Down
  1. 1. area
  2. 3. geometry
  3. 4. ray
  4. 5. fraction
  5. 7. altitude
  6. 9. sphere