This activity is also part of one or more other Books. Modifications will be visible in all these Books. Do you want to modify the original activity or create your own copy for this Book instead?
This activity was created by '{$1}'. Do you want to modify the original activity or create your own copy instead?
This activity was created by '{$1}' and you lack the permission to edit it. Do you want to create your own copy instead and add it to the book?
Énoncé d'Euclide # 22
Dans un cercle, le rapport des mesures de deux angles au centre est égal au rapport des mesures des arcs interceptés entre leurs côtés.