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The points (x1 , y1 ), (x2 , y2 ), (x1 , y2) and (x2 , y1 ) are always:

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 The points (x1 , y1 ), (x2 , y2 ), (x1 , y2) and (x2 , y1 ) are always: 

(A) Collinear 

(B) Concyclic 

(C) Vertices of a square 

(D) Vertices of a rhombus 

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1 Answer

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Best answer

Correct option  (B) Concyclic

Explanation:

Plotting the point on a graph 

With (x2, y1 ) & (x1, y2 ) as ends of diameter ∠ABC = 90º and ∠ADC = 90º 

∴ ABCD are concyclic

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