Concept information
Terme préférentiel
Poncelet's closure theorem
Définition
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In geometry, Poncelet's closure theorem, also known as Poncelet's porism, states that whenever a polygon is inscribed in one conic section and circumscribes another one, the polygon must be part of an infinite family of polygons that are all inscribed in and circumscribe the same two conics. It is named after French engineer and mathematician Jean-Victor Poncelet, who wrote about it in 1822; however, the triangular case was discovered significantly earlier, in 1746 by William Chapple.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Poncelet%27s_closure_theorem)
Concept générique
Synonyme(s)
- Poncelet's porism
Traductions
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français
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porisme de Poncelet
URI
http://data.loterre.fr/ark:/67375/PSR-JRFK6D55-J
Equivalence exacte
en.wikipedia.org
fr.wikipedia.org
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