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Définition d'un parallélogramme

Author:
Georges Hanna - Collège des Sœurs du Rosaire (cornet el hamra), Abou Hicham
Un parallélogramme ABCD est un quadrilatère qui a les côtés opposés parallèles :    (AB) // (CD)                                                       et                                                 (AD) // (BC) Appuyer sur le bouton vert pour lancer l'animation.

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