%@P:exocorcp %@Auteur: François Meria\par Compléter \textit{sur cette feuille}. \begin{myenumerate} \item Pour chacun de ces segments, mesurer sa longueur puis placer son milieu. \begin{center} \psset{linecolor=black, linewidth=.5pt, arrowsize=2pt 4} \psset{unit=1.0000cm} \pspicture*(0.0000,-0.2000)(16.0000,4.2000) \uput{0.3000}[135.0000](1.2929,2.7071){$A$} \uput{0.3000}[-45.0000](2.7071,1.2929){$B$} \uput{0.3000}[100.0000](3.7395,3.4772){$C$} \uput{0.3000}[280.0000](4.2605,0.5228){$D$} \uput{0.3000}[45.0000](4.0858,3.4142){$E$} \uput{0.3000}[-45.0000](6.9142,0.5858){$F$} \uput{0.3000}[35.0000](8.7202,3.2045){$G$} \uput{0.3000}[215.0000](5.2798,0.7955){$H$} \uput{0.3000}[-135.0000](8.5050,2.4950){$I$} \uput{0.3000}[-45.0000](9.4950,1.5050){$J$} \uput{0.3000}[68.0000](11.5994,3.4835){$K$} \uput{0.3000}[248.0000](10.4006,0.5165){$L$} \uput{0.3000}[-35.0000](15.1789,0.4743){$M$} \uput{0.3000}[165.0000](10.8211,3.5257){$N$} \psline{|-|}(1.2929,2.7071)(2.7071,1.2929) \psline{|-|}(3.7395,3.4772)(4.2605,0.5228) \psline{|-|}(4.0858,3.4142)(6.9142,0.5858) \psline{|-|}(8.7202,3.2045)(5.2798,0.7955) \psline{|-|}(8.5050,2.4950)(9.4950,1.5050) \psline{|-|}(11.5994,3.4835)(10.4006,0.5165) \psline{|-|}(15.1789,0.4743)(10.8211,3.5257) \endpspicture \end{center} \begin{multicols}{2} \begin{enumerate}[(a)] \item $AB =$ \dotfill \item $CD =$ \dotfill \item $EF =$ \dotfill \item $GH =$ \dotfill \item $IJ =$ \dotfill \item $KL =$ \dotfill \item $MN =$ \dotfill \end{enumerate} \end{multicols} \item Que remarque-t-on ? \dotfill \end{myenumerate} %@Correction: \begin{myenumerate} \item Les milieux des segments proposés sont les points d'intersection entre la droite $(d)$ et les segments. \begin{center} \psset{linecolor=black, linewidth=.5pt, arrowsize=2pt 4} \psset{unit=0.55cm} \pspicture*(0.0000,-0.5)(16.0000,5) \uput{0.3000}[135.0000](1.2929,2.7071){$A$} \uput{0.3000}[-45.0000](2.7071,1.2929){$B$} \uput{0.3000}[100.0000](3.7395,3.4772){$C$} \uput{0.3000}[280.0000](4.2605,0.5228){$D$} \uput{0.3000}[45.0000](4.0858,3.4142){$E$} \uput{0.3000}[-45.0000](6.9142,0.5858){$F$} \uput{0.3000}[35.0000](8.7202,3.2045){$G$} \uput{0.3000}[215.0000](5.2798,0.7955){$H$} \uput{0.3000}[-135.0000](8.5050,2.4950){$I$} \uput{0.3000}[-45.0000](9.4950,1.5050){$J$} \uput{0.3000}[68.0000](11.5994,3.4835){$K$} \uput{0.3000}[248.0000](10.4006,0.5165){$L$} \uput{0.3000}[-35.0000](15.1789,0.4743){$M$} \uput{0.3000}[165.0000](10.8211,3.5257){$N$} \psline{|-|}(1.2929,2.7071)(2.7071,1.2929) \psline{|-|}(3.7395,3.4772)(4.2605,0.5228) \psline{|-|}(4.0858,3.4142)(6.9142,0.5858) \psline{|-|}(8.7202,3.2045)(5.2798,0.7955) \psline{|-|}(8.5050,2.4950)(9.4950,1.5050) \psline{|-|}(11.5994,3.4835)(10.4006,0.5165) \psline{|-|}(15.1789,0.4743)(10.8211,3.5257) \psline(0,2)(15,2) \put(15,2.3){$(d)$} \endpspicture \end{center} \begin{multicols}{2} \begin{enumerate}[(a)] \item $AB =2$~cm \item $CD =3$~cm \item $EF =4$~cm \item $GH =4,2$~cm \item $IJ =1,5$~cm \item $KL =3,2$~cm \item $MN =5,4$~cm \end{enumerate} \item On remarque que tous les milieux de ces segments sont alignés. \end{multicols} \end{myenumerate}