| Regular enneadecagon | |
|---|---|
 A regular enneadecagon | |
| Type | Regular polygon |
| Edges and vertices | 19 |
| Schläfli symbol | {19} |
| Coxeter–Dynkin diagrams |    |
| Symmetry group | Dihedral (D19), order 2×19 |
| Internal angle (degrees) | ≈161.052° |
| Properties | Convex, cyclic, equilateral, isogonal, isotoxal |
| Dual polygon | Self |
In geometry, an enneadecagon, nonadecagon or 19-gon is a nineteen-sided polygon.
Regular enneadecagon
editA regular enneadecagon is represented by the Schläfli symbol {19}.