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\newcommand{\titre}{Le car de ramassage}
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    \small Un car de ramassage doit s'arrêter à chaque carrefour d'un quartier, une fois et une seule. Selon le plan c'est possible ou non — et un simple coloriage permet souvent de le dire d'avance, sans essayer.
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\end{center}
\noindent \textbf{Le car part de l'école, au carrefour M, et doit s'arrêter à chaque carrefour exactement une fois.} Il emprunte les rues qu'il veut et n'a pas à toutes les parcourir.\par\addvspace{0.35em}
\begin{center}
\renewcommand{\arraystretch}{1.35}
\begin{tabular}{|c|c|c|c|}
\hline
\cellcolor{black!32}\bfseries Les rues & ⑩ sentier des Prés & Ⓑ Place du Marché & Ⓛ Place Sainte-Croix \\ \hline
① chemin Creux & ⑪ chemin du Lavoir & Ⓒ Placette des Ormes & Ⓜ Place du Vieux-Puits \\ \hline
② passage du Marché & ⑫ rue de la Mairie & Ⓓ Carrefour des Tilleuls & \cellcolor{black!32}\bfseries Les bâtiments \\ \hline
③ rue du Moulin & ⑬ rue du Puits & Ⓔ Rond-point du Pont & \textbf{a} l'école \\ \hline
④ allée des Peupliers & ⑭ rue des Jardins & Ⓕ Place de l'Église & \textbf{b} le marché couvert \\ \hline
⑤ rue du Pont & ⑮ chemin des Vignes & Ⓖ Rond-point des Vaches & \textbf{c} la boulangerie \\ \hline
⑥ rue Verte & ⑯ impasse des Cerisiers & Ⓗ Rond-point du Stade & \textbf{d} l'église \\ \hline
⑦ chemin de Ronde & ⑰ boulevard du Parc & Ⓘ Carrefour Saint-Roch &  \\ \hline
⑧ rue des Lilas & \cellcolor{black!32}\bfseries Les carrefours & Ⓙ Rond-point de la Poste &  \\ \hline
⑨ rue Pasteur & Ⓐ Carrefour de l'Hôpital & Ⓚ Carrefour de la Mairie &  \\ \hline
\end{tabular}
\end{center}
\noindent{\small\itshape Légende du plan}\par\addvspace{0.4em}
\begin{enumerate}
  \item Colorier les carrefours du plan avec \textbf{deux couleurs}, de sorte que deux carrefours \textbf{reliés par une rue} ne soient jamais de la même couleur. Combien y en a-t-il de chaque couleur ?
  \item Le car roule d'un carrefour au suivant. Que peut-on dire de la \textbf{couleur} des arrêts successifs ? Qu'en déduire sur les couleurs des arrêts d'une tournée qui les dessert tous ?
  \item \textbf{Le car peut-il desservir tous les carrefours, une fois chacun, et revenir à l'école ?} Si oui, décrire un trajet ; sinon, démontrer que c'est impossible.
  \item \textbf{Et s'il n'est pas obligé de revenir à l'école ?} Même consigne.
\end{enumerate}
\newpage
\section*{\textcolor{red}{Correction}}
\needspace{5\baselineskip}
\subsection*{\textcolor{red}{Le car de ramassage — Correction}}
\needspace{3\baselineskip}
\begin{center}
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\draw[line width=0.5pt] (1.826,4.863) -- (1.866,4.623) -- (1.9,4.382) -- (1.928,4.141) -- (1.95,3.899) -- (1.967,3.656) -- (1.978,3.413) -- (1.984,3.17) -- (1.983,2.926) -- (1.977,2.683) -- (1.965,2.44) -- (1.948,2.198) -- (1.925,1.956) -- (1.896,1.714) -- (1.861,1.474);
\draw[line width=0.5pt] (4.744,4.335) -- (4.732,4.142) -- (4.724,3.95) -- (4.721,3.757) -- (4.723,3.564) -- (4.729,3.371) -- (4.739,3.178) -- (4.755,2.986) -- (4.774,2.794) -- (4.798,2.603) -- (4.827,2.412) -- (4.86,2.222) -- (4.898,2.033) -- (4.94,1.844) -- (4.986,1.657);
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\filldraw[fill=white, draw=black, line width=0.5pt] (7.771,11.474) -- (7.742,11.617) -- (7.662,11.738) -- (7.541,11.819) -- (7.398,11.847) -- (7.255,11.819) -- (7.134,11.738) -- (7.053,11.617) -- (7.024,11.474) -- (7.053,11.331) -- (7.134,11.21) -- (7.255,11.129) -- (7.398,11.101) -- (7.541,11.129) -- (7.662,11.21) -- (7.742,11.331) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (1.815,11.269) -- (1.787,11.412) -- (1.706,11.533) -- (1.585,11.614) -- (1.442,11.642) -- (1.299,11.614) -- (1.178,11.533) -- (1.097,11.412) -- (1.069,11.269) -- (1.097,11.126) -- (1.178,11.005) -- (1.299,10.924) -- (1.442,10.896) -- (1.585,10.924) -- (1.706,11.005) -- (1.787,11.126) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (11.182,10.723) -- (11.153,10.866) -- (11.073,10.987) -- (10.951,11.068) -- (10.809,11.096) -- (10.666,11.068) -- (10.545,10.987) -- (10.464,10.866) -- (10.435,10.723) -- (10.464,10.58) -- (10.545,10.459) -- (10.666,10.378) -- (10.809,10.35) -- (10.951,10.378) -- (11.073,10.459) -- (11.153,10.58) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (4.469,10.722) -- (4.441,10.865) -- (4.36,10.986) -- (4.239,11.067) -- (4.096,11.095) -- (3.953,11.067) -- (3.832,10.986) -- (3.751,10.865) -- (3.722,10.722) -- (3.751,10.579) -- (3.832,10.458) -- (3.953,10.377) -- (4.096,10.349) -- (4.239,10.377) -- (4.36,10.458) -- (4.441,10.579) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (1.738,7.828) -- (1.71,7.971) -- (1.629,8.092) -- (1.508,8.173) -- (1.365,8.202) -- (1.222,8.173) -- (1.101,8.092) -- (1.02,7.971) -- (0.992,7.828) -- (1.02,7.686) -- (1.101,7.565) -- (1.222,7.484) -- (1.365,7.455) -- (1.508,7.484) -- (1.629,7.565) -- (1.71,7.686) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (11.082,7.815) -- (11.054,7.958) -- (10.973,8.079) -- (10.852,8.16) -- (10.709,8.188) -- (10.566,8.16) -- (10.445,8.079) -- (10.364,7.958) -- (10.336,7.815) -- (10.364,7.672) -- (10.445,7.551) -- (10.566,7.47) -- (10.709,7.442) -- (10.852,7.47) -- (10.973,7.551) -- (11.054,7.672) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (7.725,7.47) -- (7.697,7.613) -- (7.616,7.734) -- (7.495,7.815) -- (7.352,7.843) -- (7.209,7.815) -- (7.088,7.734) -- (7.007,7.613) -- (6.979,7.47) -- (7.007,7.327) -- (7.088,7.206) -- (7.209,7.125) -- (7.352,7.097) -- (7.495,7.125) -- (7.616,7.206) -- (7.697,7.327) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (4.734,7.406) -- (4.706,7.548) -- (4.625,7.67) -- (4.504,7.75) -- (4.361,7.779) -- (4.218,7.75) -- (4.097,7.67) -- (4.016,7.548) -- (3.988,7.406) -- (4.016,7.263) -- (4.097,7.142) -- (4.218,7.061) -- (4.361,7.032) -- (4.504,7.061) -- (4.625,7.142) -- (4.706,7.263) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (2.2,4.863) -- (2.171,5.006) -- (2.09,5.127) -- (1.969,5.208) -- (1.826,5.236) -- (1.683,5.208) -- (1.562,5.127) -- (1.481,5.006) -- (1.453,4.863) -- (1.481,4.72) -- (1.562,4.599) -- (1.683,4.518) -- (1.826,4.49) -- (1.969,4.518) -- (2.09,4.599) -- (2.171,4.72) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (5.117,4.335) -- (5.088,4.477) -- (5.008,4.598) -- (4.887,4.679) -- (4.744,4.708) -- (4.601,4.679) -- (4.48,4.598) -- (4.399,4.477) -- (4.37,4.335) -- (4.399,4.192) -- (4.48,4.071) -- (4.601,3.99) -- (4.744,3.961) -- (4.887,3.99) -- (5.008,4.071) -- (5.088,4.192) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (5.359,1.657) -- (5.331,1.8) -- (5.25,1.921) -- (5.129,2.002) -- (4.986,2.031) -- (4.843,2.002) -- (4.722,1.921) -- (4.641,1.8) -- (4.613,1.657) -- (4.641,1.515) -- (4.722,1.394) -- (4.843,1.313) -- (4.986,1.284) -- (5.129,1.313) -- (5.25,1.394) -- (5.331,1.515) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (7.663,1.655) -- (7.635,1.797) -- (7.554,1.918) -- (7.433,1.999) -- (7.29,2.028) -- (7.147,1.999) -- (7.026,1.918) -- (6.945,1.797) -- (6.917,1.655) -- (6.945,1.512) -- (7.026,1.391) -- (7.147,1.31) -- (7.29,1.281) -- (7.433,1.31) -- (7.554,1.391) -- (7.635,1.512) -- cycle;
\filldraw[fill=black!38, draw=black, line width=0.5pt] (2.234,1.474) -- (2.206,1.617) -- (2.125,1.738) -- (2.004,1.819) -- (1.861,1.847) -- (1.718,1.819) -- (1.597,1.738) -- (1.516,1.617) -- (1.488,1.474) -- (1.516,1.331) -- (1.597,1.21) -- (1.718,1.129) -- (1.861,1.101) -- (2.004,1.129) -- (2.125,1.21) -- (2.206,1.331) -- cycle;
\filldraw[fill=white, draw=black, line width=0.5pt] (9.155,10.949) -- (9.274,10.967) -- (9.381,11.022) -- (9.466,11.107) -- (9.521,11.214) -- (9.539,11.333) -- (9.521,11.452) -- (9.466,11.559) -- (9.381,11.644) -- (9.274,11.699) -- (9.155,11.718) -- (9.155,11.718) -- (9.036,11.699) -- (8.929,11.644) -- (8.844,11.559) -- (8.789,11.452) -- (8.77,11.333) -- (8.789,11.214) -- (8.844,11.107) -- (8.929,11.022) -- (9.036,10.967) -- (9.155,10.949) -- cycle;
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\filldraw[fill=white, draw=black, line width=0.5pt] (7.925,9.081) -- (8.043,9.1) -- (8.151,9.155) -- (8.236,9.24) -- (8.29,9.347) -- (8.309,9.466) -- (8.29,9.585) -- (8.236,9.692) -- (8.151,9.777) -- (8.043,9.831) -- (7.925,9.85) -- (7.925,9.85) -- (7.806,9.831) -- (7.699,9.777) -- (7.613,9.692) -- (7.559,9.585) -- (7.54,9.466) -- (7.559,9.347) -- (7.613,9.24) -- (7.699,9.155) -- (7.806,9.1) -- (7.925,9.081) -- cycle;
\node at (7.925,9.466) {\scalebox{1.549}{\small 2}};
\filldraw[fill=white, draw=black, line width=0.5pt] (2.824,10.878) -- (2.943,10.897) -- (3.05,10.951) -- (3.135,11.037) -- (3.19,11.144) -- (3.208,11.263) -- (3.19,11.381) -- (3.135,11.489) -- (3.05,11.574) -- (2.943,11.628) -- (2.824,11.647) -- (2.824,11.647) -- (2.705,11.628) -- (2.598,11.574) -- (2.513,11.489) -- (2.458,11.381) -- (2.439,11.263) -- (2.458,11.144) -- (2.513,11.037) -- (2.598,10.951) -- (2.705,10.897) -- (2.824,10.878) -- cycle;
\node at (2.824,11.263) {\scalebox{1.549}{\small 3}};
\filldraw[fill=white, draw=black, line width=0.5pt] (1.93,9.152) -- (2.049,9.171) -- (2.156,9.226) -- (2.241,9.311) -- (2.296,9.418) -- (2.314,9.537) -- (2.296,9.656) -- (2.241,9.763) -- (2.156,9.848) -- (2.049,9.903) -- (1.93,9.921) -- (1.93,9.921) -- (1.811,9.903) -- (1.704,9.848) -- (1.619,9.763) -- (1.564,9.656) -- (1.545,9.537) -- (1.564,9.418) -- (1.619,9.311) -- (1.704,9.226) -- (1.811,9.171) -- (1.93,9.152) -- cycle;
\node at (1.93,9.537) {\scalebox{1.549}{\small 4}};
\filldraw[fill=white, draw=black, line width=0.5pt] (11.023,8.875) -- (11.142,8.894) -- (11.249,8.949) -- (11.334,9.034) -- (11.389,9.141) -- (11.408,9.26) -- (11.389,9.379) -- (11.334,9.486) -- (11.249,9.571) -- (11.142,9.626) -- (11.023,9.644) -- (11.023,9.644) -- (10.904,9.626) -- (10.797,9.571) -- (10.712,9.486) -- (10.658,9.379) -- (10.639,9.26) -- (10.658,9.141) -- (10.712,9.034) -- (10.797,8.949) -- (10.904,8.894) -- (11.023,8.875) -- cycle;
\node at (11.023,9.26) {\scalebox{1.549}{\small 5}};
\filldraw[fill=white, draw=black, line width=0.5pt] (5.63,11.224) -- (5.749,11.243) -- (5.856,11.298) -- (5.941,11.383) -- (5.996,11.49) -- (6.015,11.609) -- (5.996,11.728) -- (5.941,11.835) -- (5.856,11.92) -- (5.749,11.975) -- (5.63,11.993) -- (5.63,11.993) -- (5.511,11.975) -- (5.404,11.92) -- (5.319,11.835) -- (5.265,11.728) -- (5.246,11.609) -- (5.265,11.49) -- (5.319,11.383) -- (5.404,11.298) -- (5.511,11.243) -- (5.63,11.224) -- cycle;
\node at (5.63,11.609) {\scalebox{1.549}{\small 6}};
\filldraw[fill=white, draw=black, line width=0.5pt] (4.475,8.699) -- (4.594,8.718) -- (4.701,8.772) -- (4.786,8.857) -- (4.841,8.965) -- (4.859,9.083) -- (4.841,9.202) -- (4.786,9.31) -- (4.701,9.395) -- (4.594,9.449) -- (4.475,9.468) -- (4.475,9.468) -- (4.356,9.449) -- (4.249,9.395) -- (4.164,9.31) -- (4.109,9.202) -- (4.09,9.083) -- (4.109,8.965) -- (4.164,8.857) -- (4.249,8.772) -- (4.356,8.718) -- (4.475,8.699) -- cycle;
\node at (4.475,9.083) {\scalebox{1.549}{\small 7}};
\filldraw[fill=white, draw=black, line width=0.5pt] (2.934,7.737) -- (3.053,7.756) -- (3.16,7.81) -- (3.245,7.895) -- (3.3,8.003) -- (3.319,8.121) -- (3.3,8.24) -- (3.245,8.347) -- (3.16,8.432) -- (3.053,8.487) -- (2.934,8.506) -- (2.934,8.506) -- (2.815,8.487) -- (2.708,8.432) -- (2.623,8.347) -- (2.569,8.24) -- (2.55,8.121) -- (2.569,8.003) -- (2.623,7.895) -- (2.708,7.81) -- (2.815,7.756) -- (2.934,7.737) -- cycle;
\node at (2.934,8.121) {\scalebox{1.549}{\small 8}};
\filldraw[fill=white, draw=black, line width=0.5pt] (1.853,6.001) -- (1.972,6.02) -- (2.079,6.075) -- (2.164,6.16) -- (2.219,6.267) -- (2.238,6.386) -- (2.219,6.505) -- (2.164,6.612) -- (2.079,6.697) -- (1.972,6.751) -- (1.853,6.77) -- (1.853,6.77) -- (1.735,6.751) -- (1.627,6.697) -- (1.542,6.612) -- (1.488,6.505) -- (1.469,6.386) -- (1.488,6.267) -- (1.542,6.16) -- (1.627,6.075) -- (1.735,6.02) -- (1.853,6.001) -- cycle;
\node at (1.853,6.386) {\scalebox{1.549}{\small 9}};
\filldraw[fill=white, draw=black, line width=0.5pt] (9.158,7.779) -- (9.277,7.798) -- (9.384,7.853) -- (9.469,7.938) -- (9.524,8.045) -- (9.543,8.164) -- (9.524,8.282) -- (9.469,8.39) -- (9.384,8.475) -- (9.277,8.529) -- (9.158,8.548) -- (8.796,8.548) -- (8.677,8.529) -- (8.57,8.475) -- (8.485,8.39) -- (8.43,8.282) -- (8.412,8.164) -- (8.43,8.045) -- (8.485,7.938) -- (8.57,7.853) -- (8.677,7.798) -- (8.796,7.779) -- cycle;
\node at (8.977,8.164) {\scalebox{1.549}{\small 10}};
\filldraw[fill=white, draw=black, line width=0.5pt] (6.032,7.314) -- (6.151,7.333) -- (6.258,7.388) -- (6.343,7.473) -- (6.398,7.58) -- (6.416,7.699) -- (6.398,7.818) -- (6.343,7.925) -- (6.258,8.01) -- (6.151,8.065) -- (6.032,8.083) -- (5.67,8.083) -- (5.551,8.065) -- (5.444,8.01) -- (5.359,7.925) -- (5.304,7.818) -- (5.285,7.699) -- (5.304,7.58) -- (5.359,7.473) -- (5.444,7.388) -- (5.551,7.333) -- (5.67,7.314) -- cycle;
\node at (5.851,7.699) {\scalebox{1.549}{\small 11}};
\filldraw[fill=white, draw=black, line width=0.5pt] (5.242,5.549) -- (5.36,5.568) -- (5.468,5.622) -- (5.553,5.707) -- (5.607,5.815) -- (5.626,5.933) -- (5.607,6.052) -- (5.553,6.159) -- (5.468,6.245) -- (5.36,6.299) -- (5.242,6.318) -- (4.88,6.318) -- (4.761,6.299) -- (4.654,6.245) -- (4.569,6.159) -- (4.514,6.052) -- (4.495,5.933) -- (4.514,5.815) -- (4.569,5.707) -- (4.654,5.622) -- (4.761,5.568) -- (4.88,5.549) -- cycle;
\node at (5.061,5.933) {\scalebox{1.549}{\small 12}};
\filldraw[fill=white, draw=black, line width=0.5pt] (3.513,4.472) -- (3.631,4.491) -- (3.739,4.546) -- (3.824,4.631) -- (3.878,4.738) -- (3.897,4.857) -- (3.878,4.976) -- (3.824,5.083) -- (3.739,5.168) -- (3.631,5.222) -- (3.513,5.241) -- (3.151,5.241) -- (3.032,5.222) -- (2.925,5.168) -- (2.84,5.083) -- (2.785,4.976) -- (2.766,4.857) -- (2.785,4.738) -- (2.84,4.631) -- (2.925,4.546) -- (3.032,4.491) -- (3.151,4.472) -- cycle;
\node at (3.332,4.857) {\scalebox{1.549}{\small 13}};
\filldraw[fill=white, draw=black, line width=0.5pt] (2.549,2.789) -- (2.668,2.808) -- (2.775,2.863) -- (2.86,2.948) -- (2.915,3.055) -- (2.934,3.174) -- (2.915,3.293) -- (2.86,3.4) -- (2.775,3.485) -- (2.668,3.539) -- (2.549,3.558) -- (2.187,3.558) -- (2.068,3.539) -- (1.961,3.485) -- (1.876,3.4) -- (1.821,3.293) -- (1.803,3.174) -- (1.821,3.055) -- (1.876,2.948) -- (1.961,2.863) -- (2.068,2.808) -- (2.187,2.789) -- cycle;
\node at (2.368,3.174) {\scalebox{1.549}{\small 14}};
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\noindent{\small\itshape Deux carrefours reliés par une rue n'ont jamais la même couleur.}\par\addvspace{0.4em}
\noindent \textbf{1.} Le coloriage est \textbf{forcé} : une fois la couleur d'un carrefour choisie, celle de tous les autres suit, de proche en proche.\par\addvspace{0.35em}
\begin{center}
\renewcommand{\arraystretch}{1.35}
\begin{tabular}{|c|c|c|}
\hline
\cellcolor{blue!7}\bfseries Couleur & \cellcolor{blue!7}\bfseries Carrefours & \cellcolor{blue!7}\bfseries Nombre \\ \hline
sombres & C, D, E, G, J, L, M & 7 \\ \hline
clairs & A, B, F, H, I, K & 6 \\ \hline
\end{tabular}
\end{center}
\noindent{\color{red!80!black}\bfseries Il y a \textbf{7} carrefours sombres et \textbf{6} clairs. Il y en a donc \textbf{1 de plus} du côté des sombres.}\par\addvspace{0.4em}
\noindent \textbf{2.}\par\addvspace{0.35em}
\noindent{\color{green!45!black}\textbf{Le raisonnement clé.} Chaque rue relie un carrefour sombre à un carrefour clair. Donc à chaque fois que le car roule, il \textbf{change de couleur} : ses arrêts sont sombre, clair, sombre, clair\dots{} \textbf{en alternance}.}\par\addvspace{0.4em}
\noindent{\color{red!80!black}\bfseries Une tournée qui dessert les 13 carrefours alterne donc les deux couleurs d'un bout à l'autre : elle en utilise \textbf{autant de chaque, à un près}. Et si elle en utilise un de plus d'une couleur, c'est forcément celle de son \textbf{départ} et de son \textbf{arrivée}.}\par\addvspace{0.4em}
\noindent \textbf{3.}\par\addvspace{0.35em}
\noindent{\color{red!80!black}\bfseries \textbf{Non.} Un circuit revient à son point de départ : il compte autant d'arrêts sombres que de clairs. Or ce quartier a 7 carrefours sombres et 6 clairs — c'est impossible.}\par\addvspace{0.4em}
\noindent \textbf{4.}\par\addvspace{0.35em}
\noindent{\color{red!80!black}\bfseries \textbf{Oui}, à condition de ne pas revenir. Un trajet possible au départ de \textbf{M} :}\par\addvspace{0.4em}
\newpage
\noindent \textbf{Le trajet du car}\par\addvspace{0.35em}
\noindent Le car sort de l'école et prend la \textbf{rue des Jardins ⑭} vers le nord jusqu'à Carrefour Saint-Roch \textbf{(I)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans la \textbf{rue Pasteur ⑨}, vers le nord, jusqu'à Rond-point du Pont \textbf{(E)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans l'\textbf{allée des Peupliers ④}, vers le nord, jusqu'à Place du Marché \textbf{(B)}.\par\addvspace{0.35em}
\noindent Il tourne à droite dans la \textbf{rue du Moulin ③}, vers l'est, jusqu'à Carrefour des Tilleuls \textbf{(D)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans la \textbf{rue Verte ⑥}, vers l'est, jusqu'à Carrefour de l'Hôpital \textbf{(A)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans le \textbf{chemin Creux ①}, vers l'est, jusqu'à Placette des Ormes \textbf{(C)}.\par\addvspace{0.35em}
\noindent Il tourne à droite dans la \textbf{rue du Pont ⑤}, vers le sud, jusqu'à Place de l'Église \textbf{(F)}.\par\addvspace{0.35em}
\noindent Il tourne à droite dans le \textbf{sentier des Prés ⑩}, vers l'ouest, jusqu'à Rond-point des Vaches \textbf{(G)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans le \textbf{chemin du Lavoir ⑪}, vers l'ouest, jusqu'à Rond-point du Stade \textbf{(H)}.\par\addvspace{0.35em}
\noindent Il tourne à gauche dans la \textbf{rue de la Mairie ⑫}, vers le sud, jusqu'à Rond-point de la Poste \textbf{(J)}.\par\addvspace{0.35em}
\noindent Il continue tout droit dans le \textbf{chemin des Vignes ⑮}, vers le sud, jusqu'à Carrefour de la Mairie \textbf{(K)}.\par\addvspace{0.35em}
\noindent Il tourne à gauche dans l'\textbf{impasse des Cerisiers ⑯}, vers l'est, jusqu'à Place Sainte-Croix \textbf{(L)}.\par\addvspace{0.35em}
\noindent{\color{red!80!black}\bfseries Les 13 carrefours ont été desservis une fois chacun. Le car termine loin de l'école : c'est permis ici, mais pas à la question 3.}\par\addvspace{0.4em}
\end{document}
