(Q4375921)

English

regular pentagon

convex regular polygon with 5 sides

pentagon
regular 5-gon
5-gon

In more languages

Statements

equilateral pentagon

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regular convex polygon

regular hexagon

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constructible polygon

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dodecahedral pentagonal polytope

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icosahedral pentagonal polytope

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equidiagonal pentagon

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Regular Pentagon Inscribed in a Circle.gif
480 × 480; 524 KB

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regular pentagon

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Schläfli symbol

{5}

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has facet polytope

5

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has characteristic

defining formula

P=5a

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area of plane shape

defining formula

A={\frac {5}{4}}t^{2}\mathop {\mathrm {ctg} } \,{\frac {\pi }{5}}={\frac {{\sqrt {5}}{\sqrt {5+2{\sqrt {5}}}}}{4}}t^{2}={\frac {5}{12}}Rd

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defining formula

r={\frac {t}{2\tan(\pi /5)}}={\frac {t}{2{\sqrt {5-{\sqrt {20}}}}}}

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defining formula

R={\frac {a}{2}}\csc {\frac {\pi }{5}}

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maintained by WikiProject

WikiProject Mathematics

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Commons category

Regular pentagons

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Identifiers

peg

1 reference

https://bendwavy.org/klitzing/dimensions/polygons.htm

Google Knowledge Graph ID

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RegularPentagon

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Sitelinks

Wikipedia(7 entries)

Wikibooks(0 entries)

Wikinews(0 entries)

Wikiquote(0 entries)

Wikisource(0 entries)

Wikiversity(0 entries)

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Wiktionary(0 entries)

Multilingual sites(1 entry)

commonswiki Category:Regular pentagons

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