Pentacontagon

Regular pentacontagon
A regular pentacontagon
Type	Regular polygon
Edges and vertices	50
Schläfli symbol	{50}, t{25}
Coxeter diagram
Symmetry group	Dihedral (D50), order 2×50
Internal angle (degrees)	172.8°
Dual polygon	Self
Properties	Convex, cyclic, equilateral, isogonal, isotoxal

In geometry, a pentacontagon or pentecontagon or 50-gon is a fifty-sided polygon.^[1][2] The sum of any pentacontagon's interior angles is 8640 degrees.

1. ↑ Gorini, Catherine A. (2003). The Facts on File Geometry Handbook. Infobase Publishing. p. 120. ISBN 978-1-4381-0957-2.
2. ↑ Peirce, Charles Sanders (1976). The New Elements of Mathematics: Algebra and geometry. Mouton Publishers. p. 298. ISBN 9780391006126.