Difference between revisions 15793645 and 16420221 on enwiki

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Enneadecagon
[[image:Enneadecagon.jpg|200px|thumb|right|An enneadecagon.]]
An '''enneadecagon''' is a  [[polygon]] with 19 sides and angles. It is also known as an '''enneakaidecagon'''.
The [[internal angle]]s of a regular enneadecagon each measure approximately 161.052 degrees, and the area with side length of ''a'' is given by
:<math>A = \frac{19}{4}a^2 \cot \frac{\pi}{19} \simeq 28.4652 a^2.</math>

==See also==
*[[geometry]]

[[Category:Polygons]]

{{Polygons}}

{{geometry-stub}}

[[es:Enneadecágono]]