Penrose Triangle

This is a “Penrose triangle” I made, an impossible object that resembles a 3D triangle.¬†The way the sides open onto each other, and the shading pattern, make the triangle seem to have three right angles¬†– which is, of course, impossible. For more information, here’s the Wikipedia page about the Penrose triangle.

A 3D triangle shape with three right angles, known as a Penrose triangle