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Marir
@Marir
April 2019
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Bonsoir,
Aidez Moi SVP c'est un ex d'un DM de Maths, a remettre le 13 Avril .
Merci, c'est un niveau de 3ème .
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tautavel
Il faut utiliser Thalès car il y a 2 droites parallèles. ce qui donne
EF/EG = EI/EH = FI/GH
x/9 = EI/18 donc EI = 2x
x/9 = FI/22,5 donc FI = 2,5x
périmètre EF + FI + EI = 11
x + 2x + 2,5x = 11
5,5x = 11
x = 2
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Bonjour, Aidez Moi SVP pour un ex d'un DM de Maths C'est a remettre dans 1h ! SVP . L'ex ci dessous .
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Lista de comentários
EF/EG = EI/EH = FI/GH
x/9 = EI/18 donc EI = 2x
x/9 = FI/22,5 donc FI = 2,5x
périmètre EF + FI + EI = 11
x + 2x + 2,5x = 11
5,5x = 11
x = 2