\begin{tikzpicture}[x=1ex,y=1ex,baseline={([yshift=-.5ex]current bounding box.center)}]
        \coordinate (v) ;
        \def \n {2}
        \def \rad {.7}
        \def \rud {2}
        \def \rid {2.7}
        \foreach \s in {1,...,\n}
        {
            \def \angle {360/\n*(\s - 1)}
            \coordinate (s) at ([shift=({\angle}:\rad)]v);
            \coordinate (u) at ([shift=({\angle}:\rud)]v);
            \coordinate (t) at ([shift=({\angle}:\rid)]v);

            \draw (s) -- (u);
            \filldraw (u) circle (1pt);
            \filldraw (s) circle (1pt);
            \draw (t) circle (.7);
        }
        \draw (v) circle(\rad);
\end{tikzpicture}%
