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Are the purple lines straight or bent? PowerPoint Presentation
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Are the purple lines straight or bent?

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Are the purple lines straight or bent? - PowerPoint PPT Presentation

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Are the purple lines straight or bent?

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  1. Are the purple lines straight or bent?

  2. Which circle in the middle is bigger?

  3. Do you see gray areas in between the squares? Now where did they come from?

  4. You should see a man's face and also a word...

  5. Is this possible!?!

  6. The work of M. C. Escher

  7. Sidewalk Illusions