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∆ABC∼∆ QPR ? Stabiliți triunghiurile asemenea ∆MNP∼∆ HIG ? ∆DFO∼∆ RST ? Fie ∆ABC∼∆DEF∢A=40∘∢E=60∘ ∢C= ∘ Fie ∆ABC∼∆DEF 2 EF=4 EF=5 EF=6 EF=9 3 6 Fie ∆ABC∼∆DEF PABC=12cm, k=1/2 PDEF= cm Fie ∆ABC∼∆DEF AABC=4cm2, k=1/3 ADEF= cm2 1/3 1/6 1/8 1/9 ABCD trapez, AB=12cm,DC=4cm. Raportul dintre ariile triunghiurilor DOC si AOB este: x=4 x=5 x=6 x=8 x=4cm x=5cm x=6cm x=7cm |