- Penrose triangle - Wikipedia
The Penrose triangle, also known as the Penrose tribar, the impossible tribar, [1] or the impossible triangle, [2] is a triangular impossible object, an optical illusion consisting of an object which can be depicted in a perspective drawing
- Penrose triangle - New World Encyclopedia
The Penrose triangle, also known as the tribar or impossible triangle, is an impossible object, first created by the Swedish artist Oscar Reutersvärd, popularized by Roger Penrose, and later featured prominently in the works of artist M C Escher
- Impossible Triangle - The Illusions Index
The Penrose Triangle is an impossible figure (or impossible object or undecidable figure): it depicts an object which could not possibly exist It is impossible for the Impossible Triangle to exist because in order for it to exist rules of Euclidean geometry would have to be violated
- geometry - Why is the Penrose triangle impossible? - Mathematics . . .
The video below, by @ZenoRogue on Twitter, shows Penrose triangles embedded into something called "nil geometry" I don't pretend to understand the details, but it's a kind of curved space such that Penrose triangles really are possible video link: https: www youtube com watch?v=YmFDd49WsrY screenshot:
- Penrose Triangle -- from Wolfram MathWorld
The Penrose triangle, also called the tribar (Cerf), tri-bar (Ernst 1987), impossible tribar (Pappas 1989, p 13), or impossible triangle, is an impossible figure published by Penrose and Penrose (1958)
- From Impossible Shapes to the Nobel Prize – ThatsMaths
Seen from the correct angle, it appears to be a Penrose triangle In fact, the shape had already been discovered in 1934 by a Swedish artist Oscar Reutersvärd, but had apparently attracted little notice at the time
- Penrose Triangle - Mental Bomb
The Penrose triangle, also known as the Penrose tribar, is an optical illusion that depicts a three-dimensional object that is physically impossible to construct The illusion is a two-dimensional drawing that is designed to create the impression of a triangular structure, but the angles of the lines are inconsistent with the laws of Euclidean
- Penrose triangle - Wikipedia, the free encyclopedia - Zubiaga
The Penrose triangle, also known as the Penrose tribar, is an impossible object It was first created by the Swedish artist Oscar Reutersvärd in 1934 The mathematician Roger Penrose independently devised and popularised it in the 1950s, describing it as "impossibility in its purest form"
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