Regular Dodecahedron

A regular dodecahedron is a regular polyhedron composed of 12 equally sized regular pentagons.

Regular Dodecahedron

Unfold of a Regular Dodecahedron

Surface Area of a Regular Dodecahedron

Characteristics of a Dodecahedron

Number of faces: 12.

Number of vertices: 20.

Number of edges: 30.

Number of concurrent edges at a vertex: 3.

Surface Area of a Regular Dodecahedron

Surface Area of a Regular Dodecahedron Formula

Volume of a Regular Dodecahedron

Volume of a Regular Dodecahedron Formula


Example

Calculate the surface area and volume of a regular dodecahedron with an edge of 10 cm, knowing that the apothem of one side measures 6.88 cm.

Regular Dodecahedron Exercise

Regular Dodecahedron Solution