A pentagon is a geometric shape characterized by having five sides, five angles, and five vertices.
Each of its sides is of equal length in a regular pentagon, while the interior angles are all equal, measuring 108 degrees.
Pentagons are used in various contexts, from mathematics to architecture and design. In the natural world, the structure of some molecules, like pentagonal bipyramidal geometry in chemistry, can also exhibit pentagon-like shapes.
Pentagon motifs are common in art, and the shape plays a role in various polygons and polyhedra in geometry.