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Eneadecágono

Eneadecágono regular

En xeometría, un eneadecágono é un polígono de 19 lados e 19 vértices.

Os ángulos internos dun eneadecágono regular miden aproximadamente 161,052º cada un, ou exactamente rad, mentres que cada ángulo externo do eneadecágono regular mide aproximadamente 18,95º, ou exactamente rad.

A área dun eneadecágono regular de lado l é:

Nótese que tanto (tanxente) como (cotanxente) calcúlanse en radiáns.

Se se coñece a lonxitude do apotema a do polígono, outra alternativa para calcular a área é:

O é o perímetro, que se resolve multiplicando a lonxitude de cada lado polo número de lados, .

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Eneadecágono
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