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[" PLE "9:," In a quadrilateral "ABCD" ,...

[" PLE "9:," In a quadrilateral "ABCD" ,if bisectors of the "/_ABC" and "/_ADC" meet on the "],[," diagonal "AC" ,prove that the bisectors of "/_BAD" and "/_BCD" will meet on "],[," the diagonal "BD" ."]

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