Impossible Shape Hats

Description: Transparent MC Escher triangle.

Description: A different colored version of the Reutersvärd’s triangle, a great optical illusion. A two-dimensional optical illusion perceived as a projection of a three-dimensional object that cannot exist

Description: Don't try to understand the cubes, for it is a paradox that claims the minds of those who attempt it

Description: Shapes beyond comprehension from the next dimension