Penrose-triangle Definition

noun

An optical illusion depicting an impossible solid object made of three straight beams of square cross section which meet pairwise at right angles at the vertices of the triangle they form.

Wiktionary

Other Word Forms of Penrose-triangle

Noun

Singular:
penrose-triangle
Plural:
penrose-triangles

Origin of Penrose-triangle

  • After Roger Penrose (1931-), English mathematician, who popularised it in the 1950s.

    From Wiktionary

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