Enneadecagon
From Wikipedia, the free encyclopedia
In geometry, an enneadecagon is a polygon with 19 sides and angles. It is also known as an enneakaidecagon or a nonadecagon. The internal angles of a regular enneadecagon each measure approximately 161.052 degrees, and the area with side length of a is given by
The radius of the circumcircle of the regular enneadecagon with side length a is (angle measure in degrees)
[edit] External links
- Enneadecagon at MathWorld
- Enneakaidecagon at MathWorld
Polygons |
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Triangle | Quadrilateral | Pentagon | Hexagon | Heptagon | Octagon | Enneagon (Nonagon) | Decagon | Hendecagon | Dodecagon | Triskaidecagon | Pentadecagon | Hexadecagon | Heptadecagon | Enneadecagon | Icosagon | Icosihenagon | Tricontagon | Pentacontagon | Hectagon | Chiliagon | Myriagon |