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△ACD:△DCB=1:3なので、
AD:DB=1:3(底辺の比)
△DEF=△FEBなので、
DF:FB=1:1
(DF+FB=DBであることを使って)
AD:DF:FB=1:1.5:1.5
整数の比に直して2:3:3

トマトの燻製焼き

ありがとうございます

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