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Consider the triangle ABC having vertex A(1,1) and its orthocentre is (2,4). Also side AB & BC are members of the family of line, `ax + by + c = 0` where a,b,c are in A.P.
`DeltaABC` is a:

A

obtuse angled triangle

B

Right angled triangle

C

Acute angled triangle

D

Equilateral triangle

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The correct Answer is:
A
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