Triacontagon
| Regular triacontagon | |
|---|---|
| A regular triacontagon | |
| Type | Regular polygon | 
| Edges and vertices | 30 | 
| Schläfli symbol | {30}, t{15} | 
| Coxeter–Dynkin diagrams | |
| Symmetry group | Dihedral (D30), order 2×30 | 
| Internal angle (degrees) | 168° | 
| Properties | Convex, cyclic, equilateral, isogonal, isotoxal | 
| Dual polygon | Self | 
In geometry, a triacontagon or 30-gon is a thirty-sided polygon. The sum of any triacontagon's interior angles is 5040 degrees.