Thanks, it works well.

Thank you again, but I am using Maple 10. Please guide me how to do the same in my version.

Thank you for the answer, but it is not what I am looking for. I would like to use a polyhedron created from grouped polygons as an object. The thing what I need is to extract vetices of a scaled polyhedron. For example, I can define a cuboctahedron using the following: CO:=Archimedean(co,[[3],[4]],point(o,0,0,0),p). Changing p arbitrary, I can always extract vetrices of a scaled cuboctahedron using: V:=vertices(co). I need to extract vertices from my own polyhedron created from a grouped faces, which is prior scaled (p not equal 1). Is it possible? Thank you in advance!

Bests,

Andrzej

Could you provide a better mathematical description of the transforms for the visualization of octonions? Thakn you.