Answer :

(1,1,-2)

Explanation:


Mid-points of sides of ΔABC are D( 1, 2, -3), E(3, 0, 1) and F(-1, 1, -4).


From basic geometry we know that, centroid of Δ ABC and Δ DEF will be the same.


centroid of Δ ABC is given by


Hence, centroid of ΔABC is = (1, 1, -2)


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