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# Objectif 5 : Périmètres de figures usuelles (Grandeurs et Mesures - 6e) > [name=Beatrice Battesti,Collège de Casinca] <div class="row"> <div class="col-md-6"> :::success :pushpin: [Automatismes](https://coopmaths.fr/alea/?uuid=d1513&id=6M11-1&n=1&d=10&s=4&s2=1&s3=true&cd=1&uuid=f9a02&id=6M22-1&n=2&d=10&s=1&s2=true&s3=4&s4=3&cd=1&v=eleve&es=021100&title=) :books: [Un cours](https://nuage03.apps.education.fr/index.php/s/rEPqSzqi7JtAwk6) ::: *** :::info ### Activité <p style="text-align:center;"><a href="https://nuage03.apps.education.fr/index.php/s/2GRe238jY2m2GzS" target="_blank">https://www.geogebra.org/m/yset3jym</a></p> <iframe scrolling="no" title="Périmètre du cercle" src="https://www.geogebra.org/material/iframe/id/ych63sag/width/1442/height/711/border/888888/sfsb/true/smb/false/stb/false/stbh/false/ai/false/asb/false/sri/true/rc/false/ld/false/sdz/true/ctl/false" width="100%" height="200px" style="border:0px;"> </iframe> ::: </div> <div class="col-md-6"> ::: danger <iframe src="https://ladigitale.dev/digibunch/#/b/644e2788a6fa4" allowfullscreen frameborder="0" width="100%" height="700"></iframe> ::: </div></div> :::warning ### S'exercer <iframe src="https://learningapps.org/watch?app=9293882" style="border:0px;width:100%;height:500px" allowfullscreen="true" webkitallowfullscreen="true" mozallowfullscreen="true"></iframe> <iframe src="https://learningapps.org/watch?app=17600058" style="border:0px;width:100%;height:500px" allowfullscreen="true" webkitallowfullscreen="true" mozallowfullscreen="true"></iframe> :::