coauthorship_complex.tex

\begin{tikzpicture}[font=\scriptsize] % Dirty last minute TikZ with calc cheating and hardcoding.
  \coordinate (b) at (0,0);
  \coordinate (c) at (2.7,0); %($ (b) + (20:2) $);
  \coordinate (a) at (1.35,1.35); %($ (b) + (80:2) $);
  \coordinate (d) at (3.7,0.8); %($ (c) + (30:2) $);

  \draw[twosimp] (a) -- (b) -- (c) -- cycle;
  \draw (a) -- (d) -- (c) -- cycle;
  \fill[color=black] (a) circle (1.5pt);
  \fill[color=black] (b) circle (1.5pt);
  \fill[color=black] (c) circle (1.5pt);
  \fill[color=black] (d) circle (1.5pt);

  \draw (a) -- (b) node [midway,sloped,above] {$150$};
  \draw (a) -- (c) node [midway,sloped,above] {$100$};
  \draw (b) -- (c) node [midway,sloped,below] {$100$};
  \draw (c) -- (d) node [midway,sloped,below] {$4$};
  \draw (a) -- (d) node [midway,sloped,above] {$10$};
  %\node () at ($ (b) + (50:1.15) $) {$100$};
  \node () at (1.3,0.5) {$100$};
  
  \node[anchor=south west] at (a) {$160$};
  \node[anchor=south east] at (a) {$A$};
  
  \node[anchor=north] at (b) {$150$};
  \node[anchor=south] at (b) {$B$};

  \node[anchor=north] at (c) {$104$};
  \node[anchor=south] at (c) {$C$};

  \node[anchor=north] at (d) {$14$};
  \node[anchor=south] at (d) {$D$};
\end{tikzpicture}