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

Unfold 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

Volume of a Regular Dodecahedron

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.

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.