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Let A(x1,y1, z1), B(x2,y2,z2) & C (x3,y3...

Let `A(x_1,y_1, z_1), B(x_2,y_2,z_2) & C (x_3,y_3,z_3)` be the vertices of triangle `ABC` Let `D, E,` and `F `be the midpoints of `BC, AC & AB` respectively Show that centroids of `ABC & DeltaDEF` coincides.

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