bonjou
aire triangle = 1/2 x base x hauteur
on applique
aire ABC = 1/2 x BC x AH = 0,5 x 4 x 5 = 10
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bonjou
aire triangle = 1/2 x base x hauteur
on applique
aire ABC = 1/2 x BC x AH = 0,5 x 4 x 5 = 10