LaTeX-examples/documents/GeoTopo/figures/topology-cube.tex

\begin{tikzpicture}
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    \node (b)[point] at (4,0) {};
    \node (c)[point] at (5,1) {};
    \node (d)[point] at (1,1) {};
    \node (e)[point] at (0,2) {};
    \node (f)[point] at (4,2) {};
    \node (g)[point] at (5,3) {};
    \node (h)[point] at (1,3) {};
    \draw (a.center) -- (b.center) -- (f.center) -- (e.center) -- cycle;
    \draw (b.center) -- (c.center) -- (g.center) -- (f.center) -- cycle;
    \draw (e.center) -- (f.center) -- (g.center) -- (h.center) -- cycle;
    \draw[dashed] (a.center) -- (d.center) -- (c.center);
    \draw[dashed] (d.center) -- (h.center);
\end{tikzpicture}