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Triacontagon

Triacontagon

A 30-sided polygon. The regular triacontagon with side length 1 has inradius r, circumradius R, and area A given by

r=1/4(sqrt(15)+3sqrt(3)+sqrt(2)sqrt(25+11sqrt(5)))
(1)
R=1/2(2+sqrt(5)+sqrt(15+6sqrt(5)))
(2)
A=(15)/4(sqrt(15)+3sqrt(3)+sqrt(2)sqrt(25+11sqrt(5))).
(3)

See also

Polygon, Regular Polygon, Trigonometry Angles--Pi/30

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Cite this as:

Weisstein, Eric W. "Triacontagon." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Triacontagon.html

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