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B D is one of the diagonals of a quadr...

`B D` is one of the diagonals of a quadrilateral `A B C D`. `A M` and `C N` are the perpendiculars from `A\ a n d\ C` , respectively, on `B D`. Show that ar (quad. `A B C D`)=`1/2B D (A M+C N)`

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RD SHARMA ENGLISH-AREA OF PARALLELOGRAMS AND TRIANGLES-All Questions
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