%@Auteur: François Meria\par Dans chaque cas, terminer la construction du parallélogramme $ABCD$, puis en effectuant les mesures nécessaires, calculer l'aire de chaque parallélogramme. %\vskip 1cm \psset{unit=6mm} \begin{multicols}{2} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \rput{-10}{ \pstGeonode[PointSymbol=none,PosAngle={180,0,180}](0,0){A}(4,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} } \end{pspicture} \end{center} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \pstGeonode[PointSymbol=none,PosAngle={0,180,0}](4,0){A}(0,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} \end{pspicture} \end{center} \end{multicols} \begin{multicols}{2} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \rput{-45}{ \pstGeonode[PointSymbol=none,PosAngle={180,0,180}](0,0){A}(4,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} } \end{pspicture} \end{center} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \rput{-90}{ \pstGeonode[PointSymbol=none,PosAngle={0,180,0}](4,0){A}(0,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} } \end{pspicture} \end{center} \end{multicols} \vskip 4cm \begin{multicols}{2} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \rput{5}{ \pstGeonode[PointSymbol=+,PosAngle={180,0,180}](0,0){A}(4,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} \pstMiddleAB[PointSymbol=+,CodeFig=true,CodeFigColor=black,SegmentSymbol=pstslashh,PosAngle=-22]{B}{D}{O} \pstLineAB[linestyle=dashed]{A}{O} } \end{pspicture} \end{center} \begin{center} \begin{pspicture}(0,-0.5)(5,3) \rput{15}{ \pstGeonode[PointSymbol=+,PosAngle={0,180,0}](4,0){A}(0,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} \pstLineAB[linestyle=dashed]{B}{D} } \end{pspicture} \end{center} \end{multicols} \begin{multicols}{2} \begin{center} \begin{pspicture}(0,-3.5)(5,3) \rput{-45}{ \pstGeonode[PointSymbol=+,PosAngle={180,0,180}](0,0){A}(4,0){B}(1.5,3){D} \pstLineAB{A}{B} \pstLineAB{A}{D} } \end{pspicture} \end{center} \begin{center} \begin{pspicture}(-1,-5)(5,3) \rput{-90}{ \pstGeonode[PointSymbol=+,PosAngle={0,180,0}](4,0){A}(0,0){B}(1.5,3){D} } \end{pspicture} \end{center} \par\vspace*{5cm}\par \end{multicols} \psset{unit=1cm} %@Commentaire: {\em Il faut être très précis.}