The diagonals of a parallelogram $PQRS$ are $$x+3y=4$$ and $$6x-2y=7$$ Now this is pretty clear that the two diagonals are perpendicular to each other and hence it can be a square or a rhombus. But how do I decide whether its actually a square of a rhombus. (I am asking this because the question which I solved had both square and rhombus as its option).
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4They are infinite lines, you need further information. – Ng Chung Tak Aug 09 '16 at 10:33
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you probably need know one side or other details. – Bhaskara-III Aug 09 '16 at 10:38