ABC est un triangle isocèle en A, tel que
AB = 5 cm et BC = 4 cm.
1, M et N sont les milieux respectifs des
segments [AB], [AC] et [BC].
(AN) coupe (IM) en O.
a. Faire une figure.
b. Montrer que le triangle AMI est isocèle.
C. Montrer que (AO) et (IM) sont deux
droites perpendiculaires.
d. Montrer que le triangle NMI est isocèle.
e. Montrer que les droites (IM) et (BC)
sont parallèles.
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