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Ip: triunghiul Abc de||bc d€ (ab) e€ (ac) ad=6cm ac=8cm de=5cm bc=10cm C: ab? Bd? Ae? Ec?

Răspuns :

Mikkka
DE||BC ⇒ΔABC~ΔADE⇒ AB/AD=AC/AE=BC/DE
AB/6 = 8/AE=10/5=2
AB/6 = 2⇒ AB=12cm
8/AE = 2⇒ AE=8/2=4cm
BD=AB-AD=12-6=6cm
EC=AC-AE=8-4=4cm