If A(1,1), B ( 3+1,2 ) and C ( 3, 3+2 ) be three vertices of a square, then the diagonal through B is

JEE Main Mathematics question

If , and be three vertices of a square, then the diagonal through is

Answer: (D)

and are perpendicular and of equal length , so is the vertex between and and the fourth vertex is . The diagonal

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Question ID VK-024567