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ez dago edizio laburpenik
t (r2.7.1) (robota Erantsia: en:Decagon) |
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| coxeter = {{CDD|node_1|10|node}}<br>{{CDD|node_1|5|node_1}}
| simetria = [[Talde diedro|D<sub>10</sub>]], 2×10 ordena
| azalera = <math> \simeq 7
| angelua = <math>144</math>°
| propietateak = [[Poligono ganbil|ganbila]], [[Poligono zikliko|ziklikoa]], [[Poligono aldeberdin|aldeberdina]], [[Irudi isogonal|isogonala]]
}}
[[Geometria]]n, '''dekagonoa'''
== Dekagono erregularra ==
=== Propietateak ===
<math>a</math> aldearen luzera bada:
* [[Azalera]]: :<math>A = \frac{5}{2}a^2 \cot \frac{\pi}{10} = \frac{5a^2}{2} \sqrt{5+2\sqrt{5}} \simeq 7
* [[Perimetro]]a: <math>p=10a\,\!</math>
== Kanpo loturak ==
* {{MathWorld |urlname=
* {{en}} [http://www.mathopenref.com/
{{Poligonoak}}
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