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Statement-l: If the diagonals of the qua...

Statement-l: If the diagonals of the quadrilateral formed by the lines `px+ qy+ r= 0, p'x +q'y +r'= 0`, are at right angles, then `p^2 +q^2= p' ^2+q' ^2`.
Statement-2: Diagonals of a rhombus are bisected and perpendicular to each other.
Only conclusion I follows Only
conclusion II follows
Either I or II follows
Neither I nor II follows

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