1.

If G is the centroid of a triangle ABC, then GA + GB + GC equals to

Answer»

0
3 GA
3 GB
3 GC

Solution : We have, GB + GC = ( 1 + 1) GDGB + GC = 2GD, where , D is the mid-point of BC. Now, GA + GC = GA + 2GD G divides AD in the AD in the ratio 2 : 1 2 GD = - GA GA + GB + GC = GA - GA = 0


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