Penrose triangle

Definition from Wiktionary, the free dictionary
Jump to: navigation, search

English[edit]

Penrose triangle

Etymology[edit]

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

Noun[edit]

Penrose triangle (plural Penrose triangles)

Wikipedia has an article on:

Wikipedia

  1. 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.