Definition of Penrose triangle

1. 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. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Penrose Triangle

Pennsylvania German
Pennsylvanian
Pennsylvanian period
Pennsylvanians
Penny Black
Penny Blacks
Penobscot
Penobscot Bay
Penobscot River
Penobscots
Penrith
Penrose
Penrose drain
Penrose stairs
Penrose triangle (current term)
Penry
Pensacola
Penstemon
Penstemon barbatus
Penstemon centranthifolius
Penstemon cyananthus
Penstemon davidsonii
Penstemon deustus
Penstemon dolius
Penstemon fruticosus
Penstemon linarioides
Penstemon newberryi
Penstemon palmeri
Penstemon parryi

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