Some examples of these illusions include basic patterns that seem to shift or transform,
and more complicated pictures that appear to violate the rules of physics.
Because of their interesting and perplexing qualities, they are often
studied by scientists and enjoyed as a puzzle by people of all ages.
Triangles, circles, squares, rectangles, and other basic forms
are commonly used to produce optical illusion visuals.
To make the illusion, these forms are stacked in different ways.