See Penrose triangle on Wiktionary
{ "etymology_text": "After Roger Penrose (1931-), English mathematician, who popularised it in the 1950s.", "forms": [ { "form": "Penrose triangles", "tags": [ "plural" ] } ], "head_templates": [ { "args": {}, "expansion": "Penrose triangle (plural Penrose triangles)", "name": "en-noun" } ], "lang": "English", "lang_code": "en", "pos": "noun", "senses": [ { "categories": [ { "kind": "other", "name": "English entries with incorrect language header", "parents": [ "Entries with incorrect language header", "Entry maintenance" ], "source": "w" }, { "kind": "other", "name": "Pages with 1 entry", "parents": [], "source": "w" }, { "kind": "other", "name": "Pages with entries", "parents": [], "source": "w" }, { "kind": "topical", "langcode": "en", "name": "Optical illusions", "orig": "en:Optical illusions", "parents": [ "Vision", "Senses", "Perception", "Body", "All topics", "Fundamental" ], "source": "w" } ], "glosses": [ "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." ], "id": "en-Penrose_triangle-en-noun-PK9~Ov3~", "links": [ [ "optical illusion", "optical illusion" ], [ "beam", "beam" ], [ "cross section", "cross section" ], [ "pairwise", "pairwise" ], [ "right angle", "right angle" ], [ "vertices", "vertex" ], [ "triangle", "triangle" ] ], "related": [ { "word": "Necker cube" } ], "wikipedia": [ "Penrose triangle" ] } ], "word": "Penrose triangle" }
{ "etymology_text": "After Roger Penrose (1931-), English mathematician, who popularised it in the 1950s.", "forms": [ { "form": "Penrose triangles", "tags": [ "plural" ] } ], "head_templates": [ { "args": {}, "expansion": "Penrose triangle (plural Penrose triangles)", "name": "en-noun" } ], "lang": "English", "lang_code": "en", "pos": "noun", "related": [ { "word": "Necker cube" } ], "senses": [ { "categories": [ "English countable nouns", "English entries with incorrect language header", "English eponyms", "English lemmas", "English multiword terms", "English nouns", "Pages with 1 entry", "Pages with entries", "en:Optical illusions" ], "glosses": [ "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." ], "links": [ [ "optical illusion", "optical illusion" ], [ "beam", "beam" ], [ "cross section", "cross section" ], [ "pairwise", "pairwise" ], [ "right angle", "right angle" ], [ "vertices", "vertex" ], [ "triangle", "triangle" ] ], "wikipedia": [ "Penrose triangle" ] } ], "word": "Penrose triangle" }
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This page is a part of the kaikki.org machine-readable All languages combined dictionary. This dictionary is based on structured data extracted on 2024-11-06 from the enwiktionary dump dated 2024-10-02 using wiktextract (fbeafe8 and 7f03c9b). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.
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