Import work from year 2013-2014

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Benjamin Bertrand
2017-06-16 09:46:40 +03:00
commit 32262a4ecf
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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès - Travail de groupe}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
Dans tous les dessins suivants, $ABC$ et $AMN$ sont deux triangles tels que $M$ est un point de $[AB]$, $N$ un point de $[AC]$ et $(MN)//(BC)$. Dans chacunes des figures, les longueurs de quatres côtés sont données. (Les mesures sur les dessins ne sont pas respectées)
\textbf{Conjecturer les valeurs des longueurs des deux cotés manquants pour remplir les tableaux des longueurs.} Justifier quand c'est possible les valeurs trouvées.
\begin{itemize}
\item \textbf{Cas 1}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6,4);
\coordinate (N) at (3,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\draw[<->] ($(A)+(0,-0.5)$) -- ($(B) + (0,-0.5)$) node [midway, below] {$8$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = & AN = & MN = \\
\hline
Triangle $ABC$ & AB = & AC = & BC = \\
\hline
\end{tabular}
\item \textbf{Cas 2}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (2.3,0);
\coordinate (B) at (9.2,0);
\coordinate (C) at (8,4);
\coordinate (N) at (2,1);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$1$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\draw[<->] ($(A)+(0,-0.5)$) -- ($(B) + (0,-0.5)$) node [midway, below] {4};
\draw (A) --++ (2.3,0) --++ (2.3,0) node {$|$} --++ (2.3,0) node {$|$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = & AN = & MN = \\
\hline
Triangle $ABC$ & AB = & AC = & BC = \\
\hline
\end{tabular}
\item \textbf{Cas 3}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6.8,4);
\coordinate (N) at (3.4,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {4.4};
\draw[<->] ($(A)+(-0.5,+0.5)$) -- ($(C) + (0,+0.75)$) node [midway, above, sloped] {$10$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = & AN = & MN = \\
\hline
Triangle $ABC$ & AB = & AC = & BC = \\
\hline
\end{tabular}
\item \textbf{Cas 4}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6,4);
\coordinate (N) at (3,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$} node [midway, right] {15}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = & AN = & MN = \\
\hline
Triangle $ABC$ & AB = & AC = & BC = \\
\hline
\end{tabular}
\end{itemize}
\end{document}
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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès - Travail de groupe}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
Dans tous les dessins suivants, $ABC$ et $AMN$ sont deux triangles tels que $M$ est un point de $[AB]$, $N$ un point de $[AC]$ et $(MN)//(BC)$. Dans chacunes des figures, les longueurs de quatres côtés sont données. (Les mesures sur les dessins ne sont pas respectées)
\textbf{Conjecturer les valeurs des longueurs des deux cotés manquants pour remplir les tableaux des longueurs.} Justifier quand c'est possible les valeurs trouvées.
\begin{itemize}
\item \textbf{Cas 1}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6,4);
\coordinate (N) at (3,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\draw[<->] ($(A)+(0,-0.5)$) -- ($(B) + (0,-0.5)$) node [midway, below] {$8$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = \color{blue}{4} & AN = \color{blue}{5} & MN = \color{blue}{3} \\
\hline
Triangle $ABC$ & AB = \color{blue}{8} & AC = \color{red}{10} & BC = \color{red}{6} \\
\hline
\end{tabular}
\item \textbf{Cas 2}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (2.3,0);
\coordinate (B) at (9.2,0);
\coordinate (C) at (8,4);
\coordinate (N) at (2,1);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$1$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\draw[<->] ($(A)+(0,-0.5)$) -- ($(B) + (0,-0.5)$) node [midway, below] {4};
\draw (A) --++ (2.3,0) --++ (2.3,0) node {$|$} --++ (2.3,0) node {$|$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = \color{blue}{1} & AN = \color{blue}{5} & MN = \color{blue}{3} \\
\hline
Triangle $ABC$ & AB = \color{blue}{4} & AC = \color{red}{20} & BC = \color{red}{12} \\
\hline
\end{tabular}
\item \textbf{Cas 3}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6.8,4);
\coordinate (N) at (3.4,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {4.4};
\draw[<->] ($(A)+(-0.5,+0.5)$) -- ($(C) + (0,+0.75)$) node [midway, above, sloped] {$15$};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = \color{blue}{4} & AN = \color{blue}{5} & MN = \color{blue}{4.4} \\
\hline
Triangle $ABC$ & AB = \color{red}{12} & AC = \color{blue}{15} & BC = \color{red}{13.2} \\
\hline
\end{tabular}
\item \textbf{Cas 4}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (M) at (3,0);
\coordinate (B) at (6,0);
\coordinate (C) at (6,4);
\coordinate (N) at (3,2);
\draw (A) node [left] {$A$}
-- (M) node [below] {$M$} node[midway, below] {$4$}
-- (B) node [right] {$B$}
-- (C) node [right] {$C$} node [midway, right] {15}
-- (N) node [above] {$N$}
-- (A) node [midway, sloped, above] {5};
\draw (N) -- (M) node[midway, right] {3};
\end{tikzpicture}
\begin{tabular}{|c|*{3}{p{2cm}|}}
\hline
Triangle $AMN$ & AM = \color{blue}{4} & AN = \color{blue}{5} & MN = \color{blue}{3} \\
\hline
Triangle $ABC$ & AB = \color{red}{12} & AC = \color{red}{15} & BC = \color{blue}{15} \\
\hline
\end{tabular}
\end{itemize}
\end{document}
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Notes sur une activité decouverte du théorème de Thales
#######################################################
:date: 2014-07-01
:modified: 2014-07-01
:tags: Geometrie, Exo
:category: 4e
:authors: Benjamin Bertrand
:summary: Pas de résumé, note créée automatiquement parce que je ne l'avais pas bien fait...
`Lien vers act_dec_corr.tex <act_dec_corr.tex>`_
`Lien vers act_dec.tex <act_dec.tex>`_
`Lien vers act_dec_corr.pdf <act_dec_corr.pdf>`_
`Lien vers act_dec.pdf <act_dec.pdf>`_

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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès- Exercices}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\begin{Exo}
Lors d'un spectacle d'ombre chinoise, l'acteur place ses mains à 1m de la lampe et l'ombre de ses mains se projette sur l'écran. On considère que ses mains, ensembles, mesurent 40cm.
\begin{enumerate}
\item On place l'écran à 2m comme sur le dessin ci-dessous. Quel sera la taille de l'ombre sur l'écran?
\begin{center}
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (B) at (2,0);
\coordinate (C) at (4,0);
\coordinate (D) at (4,1.5);
\coordinate (E) at (2,0.75);
\draw (A) -- (B)
-- (C)
-- (D) node [midway, right] {Ombre}
-- (E)
-- (A);
\draw (B) -- (E) node [above] {Mains};
\draw[<->] ($(A)+(0,-0.5)$) -- ($(B) + (0,-0.5)$) node [midway, above] {$1m$};
\draw[<->] ($(A)+(0,-0.75)$) -- ($(C) + (0,-0.75)$) node [midway, above, near end] {$2m$};
\end{tikzpicture}
\end{center}
\item On effectue plusieurs tests où l'on place l'écran à différentes distances. Les dessins suivants sont à l'échelle 1/50 ($1cm \Leftrightarrow 50cm$) . Dans chacun des cas, mesurer la taille de l'ombre.
\begin{itemize}
\item Écran placé à 3m
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (B) at (2,0);
\coordinate (C) at (6,0);
\coordinate (D) at (6,2.25);
\coordinate (E) at (2,0.75);
\draw (A) -- (B)
-- (C)
-- (D)
-- (E)
-- (A);
\draw (B) -- (E);
\end{tikzpicture}
\item Écran placé à 4m
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (B) at (2,0);
\coordinate (C) at (8,0);
\coordinate (D) at (8,3);
\coordinate (E) at (2,0.75);
\draw (A) -- (B)
-- (C)
-- (D)
-- (E)
-- (A);
\draw (B) -- (E);
\end{tikzpicture}
\item Écran placé à 5m
\begin{tikzpicture}
\coordinate (A) at (0,0);
\coordinate (B) at (2,0);
\coordinate (C) at (10,0);
\coordinate (D) at (10,3.75);
\coordinate (E) at (2,0.75);
\draw (A) -- (B)
-- (C)
-- (D)
-- (E)
-- (A);
\draw (B) -- (E);
\end{tikzpicture}
\end{itemize}
\item Quel sera la taille de l'ombre si l'on place l'écran aux distances suivantes:
\begin{itemize}
\item 7m:
\item 10m:
\item 20m:
\end{itemize}
\item Avec les distances trouvées aux questions précédentes, compléter le tableau suivant.
\begin{tabular}{|c|*{7}{p{0.7cm}|}}
\hline
Distance de l'écran & 2 & 3 & 4 & 5 & 7 & 10 & 20 \\
\hline
Taille de l'ombre & & & & & & & \\
\hline
\end{tabular}
\item Est-ce que le tableau est un tableau de proportionnalité?
\end{enumerate}
\end{Exo}
\end{document}
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Notes sur un exercice autour du théorème de Thales
##################################################
:date: 2014-07-01
:modified: 2014-07-01
:tags: Geometrie, Exo
:category: 4e
:authors: Benjamin Bertrand
:summary: Pas de résumé, note créée automatiquement parce que je ne l'avais pas bien fait...
`Lien vers ecran.pdf <ecran.pdf>`_
`Lien vers ecran.tex <ecran.tex>`_

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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès- Exercices}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\textbf{Calcul de la hauteur d'une pyramide, une légende}
\includegraphics[scale=0.45]{./fig/pyramide}
\vfill
Dimensions observées par Thalès (en coudées, 1 coudées $\approx$ 52.5cm)
\begin{itemize}
\item Côté de la pyramide: 442 coudées
\item Taille de l'ombre de la pyramide: 404 coudées.
\item Taille du baton: 5 coudées.
\item Taille de l'ombre du baton: 11 coudées.
\end{itemize}
\textbf{La légende dit que, grâce à ces informations, Thalès, lors d'un voyage en Égypte, a réussi à mesurer la hauteur de la pyramide.}
\vfill
\eject
\begin{Exo}
Calculer les longueurs manquantes sur les dessins suivants.
\begin{enumerate}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/ABCMN.pdf}
\end{minipage}
\begin{minipage}{0.15\textwidth}
\begin{itemize}
\item $(BC) // (MN)$
\item $AN = 3$
\item $AC = 6$
\item $MN = 4$
\item $AM = 5$
\end{itemize}
\end{minipage}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/IJKLM.pdf}
\end{minipage}
\begin{minipage}{0.2\textwidth}
\begin{itemize}
\item $(JK) // (LM)$
\item $IM = 6$
\item $IL = 6$
\item $LM = 5$
\item $JK = 9$
\end{itemize}
\end{minipage}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/USTXY.pdf}
\end{minipage}
\begin{minipage}{0.2\textwidth}
\begin{itemize}
\item $(YX) // (ST)$
\item $US = 10$
\item $ST = 11$
\item $UT = 5$
\item $YX = 10$
\end{itemize}
\end{minipage}
\end{enumerate}
Le coefficent de proportionnalité des longueurs des triangles est appelé rapport de réduction (ou d'agrandissement). Calculer ce rapport pour tous les triangles.
\end{Exo}
\end{document}
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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès- Exercices}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\textbf{Évacuation d'un téléphérique}
Le téléphérique qui lie Chamonix au sommet du Mont Blanc va être construit. Le constructeur pense avant tout à la sécurité. Il veut installer une corde dans le téléphérique pour évacuer les personnes en cas de panne. \textbf{De quelle longueur devra être cette corde?}
\includegraphics[scale=0.45]{./fig/Telepherique}
\vfill
Dimensions enregistrées pour les travaux:
\begin{itemize}
\item Différence d'altitude entre Chamonix et le Mont Blanc: 3815m.
\item Longueur du téléphérique: 10km.
\item Distance parcourue par le téléphérique avant d'atteindre le pied de la montagne: 3km
\end{itemize}
\vfill
\eject
\begin{Exo}
Calculer les longueurs manquantes sur les dessins suivants.
\begin{enumerate}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/ABCMN.pdf}
\end{minipage}
\begin{minipage}{0.15\textwidth}
\begin{itemize}
\item $(BC) // (MN)$
\item $AN = 3$
\item $AC = 6$
\item $MN = 4$
\item $AM = 5$
\end{itemize}
\end{minipage}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/IJKLM.pdf}
\end{minipage}
\begin{minipage}{0.2\textwidth}
\begin{itemize}
\item $(JK) // (LM)$
\item $IM = 6$
\item $IL = 6$
\item $LM = 5$
\item $JK = 9$
\end{itemize}
\end{minipage}
\item
\begin{minipage}{0.2\textwidth}
\includegraphics[scale=0.2]{./fig/USTXY.pdf}
\end{minipage}
\begin{minipage}{0.2\textwidth}
\begin{itemize}
\item $(YX) // (ST)$
\item $US = 10$
\item $ST = 11$
\item $UT = 5$
\item $YX = 10$
\end{itemize}
\end{minipage}
\end{enumerate}
Le coefficent de proportionnalité des longueurs des triangles est appelé rapport de réduction (ou d'agrandissement). Calculer ce rapport pour tous les triangles.
\end{Exo}
\end{document}
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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès- Exercices}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\begin{Exo}
\textbf{Évacuation d'un téléphérique}
Le téléphérique qui lie Chamonix au sommet du Mont Blanc va être construit. Le constructeur pense avant tout à la sécurité. Il veut installer une corde dans le téléphérique pour évacuer les personnes en cas de panne. \textbf{De quelle longueur devra être cette corde?}
\includegraphics[scale=0.45]{./fig/Telepherique}
\vfill
Dimensions enregistrées pour les travaux:
\begin{itemize}
\item Différence d'altitude entre Chamonix et le Mont Blanc: 3815m.
\item Longueur du téléphérique: 10km.
\item Distance parcourue par le téléphérique avant d'atteindre le pied de la montagne: 3km
\end{itemize}
\end{Exo}
\vfill
\eject
\begin{Exo}
Inspiré par l'expérience de Thalès, Tom en voyage à Pise veut mesurer la tour penchée grâce à son ombre. Il se renseigne et apprend qu'elle est penchée de $4,19^o$ comme sur le dessin suivant:
\begin{center}
\includegraphics[scale=0.4]{./fig/ombre_pise}
\end{center}
\begin{enumerate}
\item Comment doit-il placer son bâton pour pouvoir appliquer le théorème de Thalès? Dessiner le baton sur le dessin.
Une fois le bâton installé, il mesure les distances suivantes:
\begin{itemize}
\item Diamètre de la tour: 15.5m.
\item Taille du baton 1,5m.
\item Taille de l'ombre du baton: 2m
\item Taille de l'ombre de la tour: 66,95m
\end{itemize}
\item Reporter les mesures sur le dessin.
\item Calculer la hauteur de la tour de Pise.
\end{enumerate}
\end{Exo}
\end{document}
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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès- Exercices}
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\begin{Exo}
Inspiré par l'expérience de Thalès, Tom en voyage à Pise veut mesurer la tour penchée grâce à son ombre. Il se renseigne et apprend qu'elle est penchée de $4,19^o$ comme sur le dessin suivant:
\begin{center}
\includegraphics[scale=0.4]{./fig/ombre_pise}
\end{center}
\begin{enumerate}
\item Comment doit-il placer son bâton pour pouvoir appliquer le théorème de Thalès? Dessiner le baton sur le dessin.
Une fois le bâton installé, il mesure les distances suivantes:
\begin{itemize}
\item Diamètre de la tour: 15.5m.
\item Taille du baton 1,5m.
\item Taille de l'ombre du baton: 2m
\item Taille de l'ombre de la tour: 66,95m
\end{itemize}
\item Reporter les mesures sur le dessin.
\item Calculer la hauteur de la tour de Pise.
\end{enumerate}
\end{Exo}
\setcounter{exo}{0}
\eject
\begin{Exo}
Inspiré par l'expérience de Thalès, Tom en voyage à Pise veut mesurer la tour penchée grâce à son ombre. Il se renseigne et apprend qu'elle est penchée de $4,19^o$ comme sur le dessin suivant:
\begin{center}
\includegraphics[scale=0.4]{./fig/ombre_pise}
\end{center}
\begin{enumerate}
\item Comment doit-il placer son bâton pour pouvoir appliquer le théorème de Thalès? Dessiner le baton sur le dessin.
Une fois le bâton installé, il mesure les distances suivantes:
\begin{itemize}
\item Diamètre de la tour: 15.5m.
\item Taille du baton 1,5m.
\item Taille de l'ombre du baton: 2m
\item Taille de l'ombre de la tour: 66,95m
\end{itemize}
\item Reporter les mesures sur le dessin.
\item Calculer la hauteur de la tour de Pise.
\end{enumerate}
\end{Exo}
\eject
\end{document}
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Notes sur divers exercices autour du théorème de Thales
#######################################################
:date: 2014-07-01
:modified: 2014-07-01
:tags: Geometrie,Exo
:category: 4e
:authors: Benjamin Bertrand
:summary: Pas de résumé, note créée automatiquement parce que je ne l'avais pas bien fait...
`Lien vers exo3_b.pdf <exo3_b.pdf>`_
`Lien vers exo2.pdf <exo2.pdf>`_
`Lien vers exo1.pdf <exo1.pdf>`_
`Lien vers exo2.tex <exo2.tex>`_
`Lien vers exo3_b.tex <exo3_b.tex>`_
`Lien vers exo1.tex <exo1.tex>`_
`Lien vers exo3.tex <exo3.tex>`_
`Lien vers exo3.pdf <exo3.pdf>`_
`Lien vers fig/ombre_pise.pdf <fig/ombre_pise.pdf>`_
`Lien vers fig/pyramide.pdf <fig/pyramide.pdf>`_
`Lien vers fig/USTXY.pdf <fig/USTXY.pdf>`_
`Lien vers fig/ABCMN.pdf <fig/ABCMN.pdf>`_
`Lien vers fig/IJKLM.pdf <fig/IJKLM.pdf>`_
`Lien vers fig/Telepherique.pdf <fig/Telepherique.pdf>`_

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\documentclass[a4paper,12pt,landscape, twocolumn]{/media/documents/Cours/Prof/Enseignements/Archive/2013-2014/tools/style/classExo}
\usepackage{tikz}
\usetikzlibrary{calc}
% Title Page
\title{Thalès - Géogebra }
\author{}
\date{}
\fancyhead[L]{Quatrième}
\fancyhead[C]{\Thetitle}
\fancyhead[R]{\thepage}
\begin{document}
\thispagestyle{fancy}
\section{Construction de la figure}
\begin{enumerate}
\item \includegraphics[scale=0.008]{fig/curseur} Placer 3 points $A$, $B$, $C$ (les renommer si necessaire avec clic droit).
\item \includegraphics[scale=0.008]{fig/polygon} En utilisant l'outil "polygone", tracer le triangle $ABC$.
\item \includegraphics[scale=0.008]{fig/point} Placer le point $M$ sur le segment $[AB]$.
\item \includegraphics[scale=0.008]{fig/parallele} Tracer la parallèleà $(BC)$ passant par $M$.
\item \includegraphics[scale=0.008]{fig/intersection} Placer le point $N$ point d'intersection de cette droite et de $[AC]$.
\item Effacer la droite (clic droit puis décocher "Afficher l'objet").
\item \includegraphics[scale=0.008]{fig/polygon} Tracer le triangle $AMN$ (toujours avec l'outil polygone).
\item \includegraphics[scale=0.008]{fig/curseur} Déplacer les points pour vérifier que la figure est bien faite.
\end{enumerate}
\section{Mesure et distance}
Maintenant que la figure est faite nous allons utiliser les outils de Géogebra pour mesurer notre figure et faire les calculs à notre place.
\subsection{Un tableur}
\begin{enumerate}
\item Ouvrir le tableur de Géogebra (\textit{affichage > Tableur}).
\item Completer le tableau pour qu'il soit le même que dans le figure ci dessous.
\includegraphics[scale=0.008]{./fig/tableau}
\end{enumerate}
\subsection{Mesure et calculs}
\begin{enumerate}
\item Nous allons commencer par mesurer la distance $AM$ pour cela taper dans la case \texttt{C3}: \textbf{=Distance[A,M]}.
\item Puis dans la case \texttt{C4}, nous allons y mettre la distance $AB$ en tapant: \textbf{=Distance[A,B]}.
\item Finir de completer les cases \texttt{E3}, \texttt{E4}, \texttt{G3} et \texttt{G4}.
\item Le tableau ainsi créé est-il un tableau de proportionnalité? Proposer un calcul à faire faire par Géogebra pour vérifier que le tableau est un tableau de proportionnalité.
\end{enumerate}
\subsection{Vérfications}
Déplacer les points pour vérifier que les distances sont bien proportionnelles quelque soit la forme du triangle et la position de $M$ sur le segment $[AB]$.
\begin{center}
\includegraphics[scale=0.3]{./fig/figure}
\end{center}
\end{document}
%%% Local Variables:
%%% mode: latex
%%% TeX-master: "master"
%%% End:

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Notes sur une activité autour du théorème de Thales et de Geogébra
##################################################################
:date: 2014-07-01
:modified: 2014-07-01
:tags: Geometrie, TICE, Géogébra
:category: 4e
:authors: Benjamin Bertrand
:summary: Pas de résumé, note créée automatiquement parce que je ne l'avais pas bien fait...
`Lien vers geogebra.tex <geogebra.tex>`_
`Lien vers geogebra.pdf <geogebra.pdf>`_
`Lien vers fig/point.png <fig/point.png>`_
`Lien vers fig/2014-05-22_09-04-1400742280.jpg <fig/2014-05-22_09-04-1400742280.jpg>`_
`Lien vers fig/tableau.png <fig/tableau.png>`_
`Lien vers fig/figure.png <fig/figure.png>`_
`Lien vers fig/figure.jpg <fig/figure.jpg>`_
`Lien vers fig/parallele.png <fig/parallele.png>`_
`Lien vers fig/2014-05-22_08-58-1400741912.jpg <fig/2014-05-22_08-58-1400741912.jpg>`_
`Lien vers fig/curseur.png <fig/curseur.png>`_
`Lien vers fig/2014-05-22_08-58-1400741930.jpg <fig/2014-05-22_08-58-1400741930.jpg>`_
`Lien vers fig/polygon.png <fig/polygon.png>`_
`Lien vers fig/2014-05-22_08-58-1400741902.jpg <fig/2014-05-22_08-58-1400741902.jpg>`_
`Lien vers fig/intersection.png <fig/intersection.png>`_