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Q: What is the number of an icosahedron or the number of vertices of a dodecahedron?

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Twenty.

Twenty.

The number of vertices ranges from 8 to 20.

a dodecahedron has 20 vertices and 12 faces

A regular dodecahedron has 20 vertices. But there are other forms of dodecahedra. A rhombic dodecahedron, for example, has 14 vertices.

no there are not 54 vertices

There are 5 platonic solids. They are: Tetrahedron, Octahedron, Icosahedron, Cube, and Dodecahedron

An icosahedron has 20 faces, 30 edges, and 12 vertices

Icosahedron can be bigger

12 vertices

An icosahedron is named after the number of faces that it has. The number of vertices will depend on the exact configuration of the shape. For example, a icosahedron in the form of a prism, with 18-gons as bases, will have 36 vertices. A pyramid with a 19-gon base will have 20 vertices. A bipyramid with a decagon base will have 12 vertices. There are very many more possible shapes.

A dodecahedron can have 8 to 20 vertices.

A dodecahedron can have 8 to 20 vertices.

20 faces12 vertices

Every dodecahedron - not just an average one, has 12 faces. It can have as few as 8 vertices.

Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.

If you mean the regular polyhedra, they are: tetrahedron, cube (or hexahedron), octahedron, dodecahedron, icosahedron, (Plato's 50) plus: small stellated dodecahedron, great stellated dodecahedron, great dodecahedron, great icosahedron for 9. Maybe a sphere is a perfect curved 3D figure.

Tetrahedron, Cube Octahedron Dodecahedron Icosahedron

A dodecahedron is a polyhedron with between 8 and 20 vertices.

A dodecahedron is a polyhedron with between 8 and 20 vertices.

It has 60 :)

89 vertices and 444 faces

Tetrahedron, Hexahedron(cube), Octahedron, Dodecahedron, and Icosahedron

The tetrahedron, the cube, the octahedron, the dodecahedron and the icosahedron.

5 tetrahedron, cube, octahedron, dodecahedron, and Icosahedron