A dodecahedron has 20 sides, which are all pentagons. "Dodeca" means "do" (2) times "deca" (10).
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A dodecahedron has 12 sides.
a 3-d dodecahedron has 12 pentagon shaped sides
A dodecahedron has 12 sides.
a dodecahedron
12-sided- dodecahedron