Back ثلاثوني الأضلاع Arabic Тридесетоъгълник Bulgarian سیلا CKB Dreißigeck German Triacontagon English Trideklatero Esperanto Triacontágono Spanish Triakontagono Basque سیضلعی Persian Triacontagone French
| Regular triacontagon | |
|---|---|
 A regular triacontagon | |
| Type | Regular polygon |
| Edges and vertices | 30 |
| Schläfli symbol | {30}, t{15} |
| Coxeter diagram |      |
| Symmetry group | Dihedral (D30), order 2×30 |
| Internal angle (degrees) | 168° |
| Dual polygon | Self |
| Properties | Convex, cyclic, equilateral, isogonal, isotoxal |
A triacontagon or 30-gon is a shape with 30 sides and 30 corners.