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Print Illusions - Tricks for Your Eyes
Are the sides of the square straight or not? They are definitely straight.
Count the black dots. Do they even exist?
Stare at the black dot in the center. Do you see the gray shading disappearing?
What is this? It's the shade of letter E.
Can you locate the other shade of green?
Are the vertical lines parallel?
Look at the chart above and say the COLOR of the word, not the word itself.
This image appears to bulge, although it only consists of squares.
Is the blue line in the middle a perfect square?