Feat: début du chapitre sur les polygones réguliers
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y="0">Exercice des cocottes</tspan></text>
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y="85.592377">Chacune des cocottes blanches a été obtenue à partir de la grise par une transformation. </tspan><tspan
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id="tspan4536"> - Quelles sont les cocottes qui ont subit la même transformation?</tspan><tspan
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y="121.25012"> - Ecris une phrase pour décrire chaque transformation. </tspan><tspan
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After Width: | Height: | Size: 18 KiB |
7
Technologique/02_Polygones_reguliers/exercises.tex
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7
Technologique/02_Polygones_reguliers/exercises.tex
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|
|||||||
|
\begin{exercise}[subtitle={<++>}, step={1}, origin={<++>}, topics={ Polygones reguliers }, tags={ Géométrie }]
|
||||||
|
<++>
|
||||||
|
\end{exercise}
|
||||||
|
|
||||||
|
\begin{solution}
|
||||||
|
<++>
|
||||||
|
\end{solution}
|
||||||
31
Technologique/02_Polygones_reguliers/index.rst
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31
Technologique/02_Polygones_reguliers/index.rst
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|
|||||||
|
Polygones réguliers
|
||||||
|
###################
|
||||||
|
|
||||||
|
:date: 2021-09-16
|
||||||
|
:modified: 2021-09-16
|
||||||
|
:authors: Benjamin Bertrand
|
||||||
|
:tags: Géométrie
|
||||||
|
:category: Technologique
|
||||||
|
:summary: Étude des transformations du plan, des polygones réguliers, des pavages et des frises.
|
||||||
|
|
||||||
|
Étape 1: Reconnaître les transformations du plan
|
||||||
|
================================================
|
||||||
|
|
||||||
|
.. image:: ./1E_classer_transformations.pdf
|
||||||
|
:height: 200px
|
||||||
|
:alt: Reconnaitre les transformations du plan
|
||||||
|
|
||||||
|
|
||||||
|
Étape 2: Construire les polygones réguliers
|
||||||
|
===========================================
|
||||||
|
|
||||||
|
On donne la définition d'un polygone régulier et on demande de tous nous les trouver. On peut espérer qu'ils trouvent le triangle équilatérale et le carré. On les poussera alors à en chercher à 5 ou 6 côtés.
|
||||||
|
|
||||||
|
S'ils ne l'on pas fait, on leur montrera que ces polygones peuvent s'inscrire dans un cercle. On les laissera continuer à chercher d'autres polygones.
|
||||||
|
|
||||||
|
Si la méthode n'a pas été découverte, on pourra ensuite montrer comment construire les polygones réguliers à partir de l'angle au centre.
|
||||||
|
|
||||||
|
Étape 3: Exercices techniques
|
||||||
|
=============================
|
||||||
|
|
||||||
|
On y reverra le théorème de Pythagore ainsi que les outils pour calculer les angles.
|
||||||
Loading…
Reference in New Issue
Block a user