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A B C D is a rectangle. Points M and ...

`A B C D` is a rectangle. Points `M` and `N` are on `B D` such that `A M_|_B D` and `C N_|_B D` . Prove that `B M^2+B N^2=D M^2+D N^2` .

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RD SHARMA ENGLISH-TRIANGLES-All Questions
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