% ########### TODO #################
\noindent\hspace{0.64cm}\begin{minipage}[c]{0.95\textwidth}
\begin{lstlisting}[numbers=left,language=TeX, frame=lines,basicstyle=\footnotesize\ttfamily]
% Dans le préambule
% -----------------
\usepackage{tikz}
% -----------------

% Dans le préambule
% -----------------
\usetikzlibrary{calc}
% -----------------

\begin{tikzpicture}
\draw (1,0)-- (2,2) -- node[above]{L1}(3,2)
           -- (4,0) -- node[below]{L2} cycle;

\draw[<->] ($(1,0)!5mm!90:(2,2)$)
                    -- node[fill=white]{$H_1$} ($(2,2)!5mm!-90:(1,0)$);
\draw[|-|] ($(3,2)!4mm!90:(4,0)$)
                    -- node[above,sloped]{$x$} ($(4,0)!4mm!-90:(3,2)$);
\end{tikzpicture}
\end{lstlisting}
\end{minipage}