PolyhedronData["Dodecahedron","VertexCoordinates"]
If I execute this expression on the Wolfram Programming Cloud I receive vertex coordinates like this:
Root[1 - 20 #1^2 + 80 #1^4 &, 3]
Im not sure what to do with it. I couldnt simplify or convert it to NumberForm
. Im probably doing something wrong.