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MyDragibus
@MyDragibus
April 2019
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Sur la figure ci-dessous:
les points A, C, F, D sont alignés
les points B, C et E sont alignés
(AB)//(De) et (AE)//(BF)
AC=3 cm
BF= 2 cm
DC=6 cm
=>Calculer la longueur de CF
Merci de votre aide!
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danielwenin
Verified answer
Il y a 2 configurations de Thalès La première donne BC/CE = AC/CD = 1/2
la seconde donne BC/CE = CF/CA => CF = CA/2 = 3/2
20 votes
Thanks 55
MyDragibus
Pourquoi est-ce que CF = CA/2?
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Verified answer
Il y a 2 configurations de Thalès La première donne BC/CE = AC/CD = 1/2la seconde donne BC/CE = CF/CA => CF = CA/2 = 3/2