如图,在三角形ABC中,AB=5,BC=3,AC=4,动点E(与碘A,C不重合),在边AC上,EF平行于AB交如图,在三角形ABC中,AB=5,BC=3,AC=4,动点E(与点A,C不重合),在边AC上,EF平行于AB交交BC于点F,1:当三角形ECF的面积与四边形EAB

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