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[" 6.) In Fig."9.25" ,diagonals "AC" and...

[" 6.) In Fig."9.25" ,diagonals "AC" and "BD" of quadrilateral "],[" ABCD intersect at "O" such that "OB=OD" ."],[" If "AB=CD" ,then show that: "],[" (i) ar "(DOC)=ar(AOB)],[" (ii) ar "(DCB)=ar(ACB)],[" (ii) DAIICB or ABCD is a parallelogram."],[" (Hint: From D and B,draw perpendiculars fo AC."]],[" [Hint: From D and B,draw perpendiculars fo AC.] "]

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