Triacontagon
A triacontagon or 30-gon is a shape with 30 sides and 30 corners.
| 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.
Regular triacontagon
All sides of a regular triacontagon are the same length. Each corner is 168°. All corners added together equal 5040°.
Area
The amount of space a regular triacontagon takes up is
a is the length of one of its sides.
Special cases, including regular polygons with their own names, in parentheses List of polygons by number of sides | ||
| 1–10 sides |  | |
| 11–20 sides | ||
| 21–100 sides (selected) | ||
| >100 sides | ||
| Star polygons (5–12 sides) | ||
| Triangles | ||
| Quadrilaterals | ||
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