1.

The diagonals of a parallelogram \[PQRS\]are along the lines \[x+3y=4\]and \[6x-2y=7\]. Then \[PQRS\] must be a    [IIT 1998]

A.            Rectangle                                  
B.            Square
C.            Cyclic quadrilateral                   
D.            Rhombus
Answer» E.


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