Op Art

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Across
  1. 1. Tone refers to black, grey, and....
  2. 4. A straight, curved or continuous mark....
  3. 5. Shapes that contain straight lines and corners are....
  4. 8. What is "Op" in Op Art short for?
Down
  1. 2. A deceptive appearance or impression....
  2. 3. The visual strength or intensity of a line....
  3. 6. Colour, Shape, tone and line are 4 of our 7 formal....
  4. 7. What is the surname of the artists Bridget....