The Penrose triangle is an impossible object that was created in 1934 by the Swedish artist Oscar Reutersvärd. It was subsequently rediscovered independently by physicist Roger Penrose in the 1950s who popularized it by describing it as "impossible in its purest form."
This impossible object appears to be a solid object formed by three straight sections of square section that are joined together forming right angles at the ends of the triangle they form. This combination of properties cannot be satisfied by any three-dimensional figure in an ordinary Euclidean space.
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