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[" 7.D and "E" are points on sides "AB" ...

[" 7.D and "E" are points on sides "AB" and "AC" respectively of "Delta ABC" such that "],[2r^(2)DBC=ar(EBC)" .Prove that DEIIBC."],[oint" .XY is a line parallel to side "BC" of atriangleABC.If BE If BE If AC and CFIAB meet "X" at "E],[" and "F" respectively,show that "]

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