A dodecahedron is a polyhedron with twelve flat faces, thirty edges, and twenty vertices. Each face of a regular dodecahedron is a regular pentagon, making it one of the five Platonic solids, a group of polyhedra where all faces, edges, and angles are identical. This uniformity gives the dodecahedron a highly symmetrical and aesthetically appealing shape.
The regular dodecahedron is notable for its complexity compared to simpler polyhedra like the tetrahedron or octahedron. Each of its vertices is where three pentagonal faces meet, and it can be visualized as a three-dimensional shape that looks somewhat rounded due to the pentagonal faces enclosing a space more fully than triangular or square faces.