Op art

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Across
  1. 2. A common pattern in op art
  2. 4. Another name for op art
  3. 5. The creator of op art
  4. 6. a mix of colours that create a 3d effect
Down
  1. 1. The first exhibit displaying illusionism
  2. 3. an idea, feeling, or quality that does not have a physical, material body