\begin{tableau}[pr]{\linewidth}
  \\ \hline %%%%%%%%%%%%%%%%%%%%%%P13 
  \begin{tikzpicture}[general, xscale=0.7, yscale=0.68]
   \draw (0,0)--(4,2);
   \draw (0,2)--(4,4);
   \draw[dashed] (0.5,0.25)--(3.5,3.75);
   \draw[dashed] (1,2.5)--(3,1.5);
   \foreach \x/\y/\N/\pos in {0.5/0.25/A/below left, 3.5/3.75/B/above, 1/2.5/C/above left, 3/1.5/D/below right,2/2/O/below} {\draw (\x,\y) node{$\times$};
   \draw (\x,\y) node[\pos]{$\N$}; } 
 \draw (1.25,1.125) node[rotate=-20, color=G1] {$\approx$};
 \draw (2.75,2.825) node[rotate=-20, color=G1] {$\approx$};
 \draw (1.5,2.25) node[rotate=-32, color=J1] {$\infty$};
 \draw (2.5,1.75) node[rotate=-32, color=J1] {$\infty$};
  \end{tikzpicture} &
  \propriete{}  Si deux droites sont symétriques par rapport à un point alors elles sont parallèles. &
   Ici, $(AD)$ et $(BC)$ sont symétriques par rapport à $O$. 

Donc 
$(AD)//(BC)$.
\end{tableau}
