Thanks!
and Yes, I mean the External object.
Please tell me more about how to constuct a dome.


Herman Serras wrote:

> If you mean only the external object built from triangles: it's a
> regular icosahedron. The internal object is an regular dodecahedron (the
> dual polyhedron of a icosahedron).
> Approximating a sphere by equilateral triangles is only possible in 3
> ways: a regular tetrahedron, a regular octahedron or a regular
> icosahedron. Of course the icosahedron is the best approximation.
> If not all triangles have to be congruent there are different ways to
> construct a "dome".
> Have a look on my website for regular polyhedra and if you want an
> appropriate include file, let me know (of course you can find polyhedron
> include files on the web).
> Herman
>
> Eitan Tal wrote:
> >
> > How can I build a looking-like sphere using triangles?
> > For those of you who played D&D, I mean the 20 faced dice, for
> > example.
> >
> > All triangles that build the sphere must be all equal in their area,
> > and all of their angles are 60 degrees.
> > An image would explain better:
> >
> > [Image]
> >
> > Moderators: I have devastatedly compressed the image to 7.5 kb,
> > I hope you don't mind that I have included a file.
>
> --
> Herman Serras
> Gent (Belgium)
> http://cage.rug.ac.be/~hs/

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