Enneadecagon

The enneadecagon is a polygon with 19 sides. A regular enneadecagon has equal sides and equal angles.

A circle with radius 3 centered at the center of an enneadecagon intersects its sides. This is related to the fact that 19/3 ≈ 2π.

Stellations

 * 2-enneadecagram
 * 3-enneadecagram
 * 4-enneadecagram
 * 5-enneadecagram
 * 6-enneadecagram
 * 7-enneadecagram
 * 8-enneadecagram
 * 9-enneadecagram