% This picture represents a cube
% Copyright Pablo (C) 2021
\begin{tikzpicture}
  \draw (0,0,0) -- ++(-1,0,0) -- ++(0,-1,0) -- ++(1,0,0) -- cycle;
  \draw (0,0,0) -- ++(0,0,-1) -- ++(0,-1,0) -- ++(0,0,1) -- cycle;
  \draw[dotted, shift={(-1, 0)}] (0,0,-1) -- ++(0,-1,0) -- ++(0,0,1);
  \draw (0,0,0) -- ++(-1,0,0) -- ++(0,0,-1) -- ++(1,0,0) -- cycle;
  \draw[dotted, shift={(0, -1)}] (-1,0,-1) -- ++(1,0,0);
\end{tikzpicture}
