Question

Whichofthefollowing is amultiplicativeidentityelement ? ( )
a) 0 b) 1 c) 2 d) –1​

Answer 1

Centroid of triangle coincide with the centroid of triangle formed by joing the mid-point of sides of triangle

So, centroid of △ABC= centroid of △DEF

=(32+2+0,31+0+1,30+0+0)

=(34,32,0)

b) 1