Puzzling perspectives

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Across
  1. 4. An unexpected turn
  2. 6. Center of attention or clarity
  3. 7. Different points of view
  4. 9. What processes thoughts
Down
  1. 1. A hint to find the answer
  2. 2. A sight or opinion
  3. 3. To figure out the solution
  4. 5. To use your brain
  5. 8. Reasoning used to solve puzzles