
\begin{exercice}Sur la pyramide $SABCD$ à base rectangulaire ci\nobreakdash-dessous, $H$ est le pied de la hauteur. 


\parbox{0.24\textwidth}{
Donner les positions relatives des droites suivantes.
\begin{enumerate}
\item $(AB)$ et $(CD)$
\item  $(SA)$ et $(BD)$ 
\item $(HA)$ et $(SC)$
\item $(BH)$ et $(DB)$
\end{enumerate} 
}\hfill\parbox{0.74\textwidth}{
\begin{tikzpicture}[general, scale=0.7]
\draw[fill=G4, color=G4](0,0)--(4,0)--(5,0.5)--(2.5,3)--cycle;
\draw (0,0)--(4,0)--(2.5,3)--cycle;
\draw (4,0)--(2.5,3)--(5,0.5)--cycle;
\draw[loosely dashed] (0,0)--(1,0.5)--(5,0.5);
\draw[loosely dashed] (2.5,3)--(1,0.5);
\draw[loosely dashed] (2.5,3)--(2.5,0.25);
\draw[loosely dashed] (0,0)--(5,0.5);
\draw[loosely dashed] (4,0)--(1,0.5);
%\begin{footnotesize}
\draw(0,0) node[below] {$A$};
\draw(4,0) node[below] {$B$};
\draw(5,0.5) node[right] {$C$};
\draw(1.25,0.7) node[left] {$D$};
\draw(2.5,3) node[above] {$S$};
\draw(2.5,0) node[below] {$H$};
%\end{footnotesize}
\end{tikzpicture}
}
\end{exercice}

