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[" 27.In the given figure,line segment "DF],[" intersect the side "AC" of a "/_ABC" at the point "E],[" such that "E" is the mid-point of "CA" and "],[/_AEF=/_AFE" Prove that "(BD)/(DC)=(BF)/(CE)],[qquad [" () "F],[" C "],[" D."]]

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