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Can I calculate for example with wolfram alpha coordinates of vertices of dodecahedron? I know coordinates of center point of dodecahedron (center of gravity) and the height of dodecahedron.

Thanks for advice.

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Of course that's just one possibility. You can then take an arbitrary rotation, and appropriate translation and scaling (assuming your dodecahedron is a regular one). –  Robert Israel May 6 '12 at 6:58
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Yes, Wolfram Alpha can do it. Inputting PolyhedronData["Dodecahedron", "VertexCoordinates"] into Wolfram Alpha will yield a set of vertex coordinates you can use for a dodecahedron with unit edge length. Alternatively, MathWorld gives a simple set of coordinates for a dodecahedron with edge length $\dfrac2{\phi}$, where $\phi$ is the golden ratio: $(0,\pm\phi^{-1},\pm\phi),(\pm\phi^{-1},\pm\phi,0),(\pm\phi,0,\pm\phi^{-1}),(\pm 1,\pm 1,\pm 1)$ and all combinations of signs are taken.

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