Find the vector from the origin O to the centroid of the triangle whose vertices are (1, -1, 2), (2, 1, 3) and (-1, 2, -1).
Centeroid of the triangle with Vertices (x1, y1, z1), (x2, y2, z2), and (x3, y3, z3) is given by,
In vector algebra, ‘x’ consider as a coefficient of 
and ‘y’ as a coefficient of 
and ‘z’ as a coefficient of 
So the position vector of the centroid,
So the location of the centroid is 
And the vector is,
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