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Questions  

If the points A(1,1),B(1,1) and C3, 3 are the vertices of a triangle, then triangle is

a
right-angled
b
isosceles
c
equilateral
d
none of these

detailed solution

Correct option is D

We have,AB=22,BC=(3−1)2+(3+1)2=22and ,AC=(3+1)2+(3−1)2=22∴ AB=BC=CASo △ABC is equilateral.

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