The Penrose triangle, or "impossible triangle," is a fascinating optical illusion first described in the 1950s by mathematician Roger Penrose. It appears to be a solid object, yet it cannot exist in three-dimensional space.
The Penrose triangle, or "impossible triangle," is a fascinating optical illusion first described in the 1950s by mathematician Roger Penrose. It appears to be a solid object, yet it cannot exist in three-dimensional space.