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Categories: Polygons

Icosagon

In geometry, an icosagon is a twenty-sided polygon.

The interior angle of a regular icosagon is 162°, and the area with a side length of a is given by

$A = 5a^2 \cot \frac{\pi}{20} \simeq 31.5688 a^2.$

See also

geometry

Categories: Polygons

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07-14-2008 23:18:10
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