Penrose triangle
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The Penrose triangle, also known as the Penrose tribar, the impossible tribar, or the impossible triangle, is a triangular impossible object, an optical illusion consisting of an object that can be de
A 3D-printed version of the Reutersvärd Triangle illusion
Impossible Triangle sculpture, Gotschuchen, Austria
Real Penrose Triangle, Stainless Steel, by W.A.Stanggaßinger, Wasserburg am Inn, Germany. This type of impossible triangle was first created in 1969 by the Soviet kinetic artist Vyacheslav Koleichuk.
Penrose stairs
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The Penrose stairs or Penrose steps, also dubbed the impossible staircase, is an impossible object created by Oscar Reutersvärd in 1937 and later independently discovered and made popular by Lionel Pe
Penrose triangle
…Shepard elephant Penrose stairs An article about impossible triangle sculpture in Perth…
Ascending and Descending by M. C. Escher