"JRG" <jrg### [at] hotmailcom> schrieb im Newsbeitrag
news:3c0aa4d7$1@news.povray.org...
> Jan Walzer wrote:
> > 1)
> > the points of a regular tetraedron can have the following coordinates
> >
> > #declare h=sqrt(3/4);
> > #declare p1=<   0,-1/3*h, 2/3>;
> > #declare p2=< 1/2,-1/3*h,-1/3>;
> > #declare p3=<-1/2,-1/3*h,-1/3>;
> > #declare p4=<   0, 2/3*h,   0>;
>
> p1, p2 and p3 are not the vertixes of an equilateral triangle. They are the
> vertixes of an isosceles triangle with base = 1 and height =1.


damn ... you hit me ... Thanx ...
I'll post again later...


--
Jan Walzer <jan### [at] lzernet>

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