Geo Puzzle

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Across
  1. 2. conflict
  2. 4. decagon
  3. 5. hieghtend
  4. 9. 3D circle
  5. 10. transition
  6. 11. part
  7. 12. circle
Down
  1. 1. coexistence
  2. 3. simple
  3. 4. rectangle
  4. 6. rd triangle
  5. 7. undo
  6. 8. equivalence