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Geometry and Trigonometry

Solid Geometry

What are the various types of polyhedra?

As with most forms, polyhedra are divided into many names, depending on the number of faces. The following lists some of them, based on their number of sides:

Sides Polyhedra Name
4 tetrahedron
5 pentahedron
6 hexahedron
7 heptahedron
8 octahedron
9 nonahedron
10 decahedron
11 undecahedron
12 dodecahedron
14 tetradecahedron
20 icosahedron
24 icositetrahedron
30 triacontahedron
32 icosidodecahedron
60 hexecontahedron
90 enneacontahedron