\begin{tikzpicture}[x=1ex,y=1ex,baseline={([yshift=-.5ex]current bounding box.center)}]
    \coordinate (v) ;
    \def \n {3}
    \def \rad {1.2}
    \def \rud {1.9}
    \foreach \s in {2,...,\n}
    {
        \def \angle {360/\n*(\s - 1)}
        \coordinate (s) at ([shift=({\angle}:\rad)]v);
        \coordinate (u) at ([shift=({\angle}:\rud)]v);

        \draw (v) -- (s);
        \filldraw (s) circle (1pt);
        \draw (u) circle (.7);
    }
    \filldraw (v) circle (1pt);

    \coordinate (s) at ([shift=({0}:.7)]v);
    \draw (s) circle (.7);
\end{tikzpicture}%
