\begin{tableau}[pr]{\linewidth}
  \hline %%%%%%%%%%%%%%%%%%%%%%P30
\begin{tikzpicture}[general, xscale=0.7, yscale=0.5]
 \draw (0,-1)--(2,0)--(0,1)--(-2,0)--cycle;
 \draw (0,-1) node[below] {$A$};
 \draw (2,0) node[right] {$B$};
 \draw (0,1) node[above] {$C$};
 \draw (-2,0) node[left] {$D$};
 \draw (1,0.5) node[color=A1, rotate=63.435] {$\approx$};
 \draw (-1,0.5) node[color=A1, rotate=116.565] {$\approx$};
 \draw (1,-0.5) node[color=A1, rotate=116.565] {$\approx$};
 \draw (-1,-0.5) node[color=A1, rotate=63.435] {$\approx$};
\end{tikzpicture}
 &  \propriete{} 
  Si un quadrilatère a ses quatre côtés de même longueur alors c'est un losange.
&Ici, $AB=BC=CD=DA$.
 
 Donc $ABCD$ est un losange.
\end{tableau}
