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If the mid-points of the sides of a tria...

If the mid-points of the sides of a triangle AB, BC, CA are D(1, 2, -3), E(3, 0, 1) and F(-1, 1, -4), then the centriod of the triangle ABC is ____ .

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The correct Answer is:
`DeltaABC=G(1,1,-2)`
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