# Difference between revisions of "Dodecagon"

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− | A '''dodecagon''' is a 12-sided [[polygon]]. The sum of its internal [[angle]]s is <math>1800^{\circ}</math>. | + | A '''dodecagon''' is a 12-sided [[polygon]]. The sum of its internal [[angle]]s is <math>1800^{\circ}</math>. Each of its exterior angles has measure <math>30^{\circ}</math>. |

A regular dodecagon can be seen below: | A regular dodecagon can be seen below: |

## Latest revision as of 12:08, 15 June 2018

A **dodecagon** is a 12-sided polygon. The sum of its internal angles is . Each of its exterior angles has measure .

A regular dodecagon can be seen below:

The area of a regular dodecagon can be calculated by the formula , where is the circumradius of the dodecagon. In this case, would be . Also, each small triangle (, , etc.) is congruent, so (etc) .

## See Also

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