This is the classic impossible shape... i don't know what it's called. I am supposed to explain why I made this, and i don't know why. The shape, as said by the name, is impossible, but i made it visible from one perspective in which it is possible. The other pictures show how it is modeled.
It is called a Penrose Triangle, or Impossible Triangle.
How about a version of the [Reutersvaard Triangle illusion] (https://en.wikipedia.org/wiki/Impossible_triangle)!!