If A, B, C and D are four non-collinear points in the plane such that `bar(AD)+
Channel: Doubtnut
Date: 29/03/2020

If A, B, C and D are four non-collinear points in the plane such that `bar(AD)+bar(BD)+bar(CD)=bar(0)`, then prove that the points D is the centroid of the triangle ABC.