The faces of a regular dodecahedron are regular pentagons. Hence, Option C) is the right answer.
A polygon is a closed figure made up of three or more line segments connected end to end.
A dodecahedron must have 12 faces.
Out Of these 12 faces, two must be the top & base.
So there shall be 10 faces on the lateral surface.
Therefore, there shall be 5 on one half & 5 on the other half.
In order to have 5 faces on the base of a regular polygon, the base must have 5 sides So it must be a regular pentagon.
Therefore, The faces of a regular dodecahedron are regular pentagons.
Hence, Option C) is the right answer.
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