A, B C and D are four points in a plane ...

A, B C and D are four points in a plane with position vectors, `veca, vecb vecc and vecd` respectively, such that `(veca-vecd).(vecb-vecc)= (vecb-vecd).(vecc-veca)=0` then point D is the ______ of triangle ABC.

A

centroid of `triangleABC`

B

orthocenter of `triangleABC`

C

circumcenter of `triangleABC`

D

None of these

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The correct Answer is:

B

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