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The points (5 , 1) , (1 , -1) and (11 , ...

The points (5 , 1) , (1 , -1) and (11 , 4) are

A

A. Collinear

B

B. Vertices of right angled triangle

C

C. Vertices of equilateral triangle

D

D. Vertices of an isosceles

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The correct Answer is:
A
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