Pentagon

A polygon with five sides and five vertices. A regular pentagon has equal sides and angles; its symmetry group is the order-ten dihedral group, consisting of five rotations and five reflections. Each reflection axis passes through a vertex and the midpoint of the opposite edge.

The term "Pentagon" can refer to a couple of different things, depending on the context: 1. **Geometric Shape**: A pentagon is a five-sided polygon in geometry. It has five edges and five vertices. Regular pentagons have sides of equal length and equal angles, while irregular pentagons may have sides and angles of varying lengths and measures. The interior angles of a pentagon sum to 540 degrees.