Q12 of 50 Page 220

Find the centroid of a triangle, the mid-point of whose sides are D (1, 2, – 3), E (3, 0, 1) and F (– 1, 1, – 4).

Given; The mid-point of whose sides are D (1, 2, – 3), E (3, 0, 1) and F (– 1, 1, – 4).

For a triangle the coordinates of the centroid is also given by the average of the coordinates of midpoints of its sides.



∴ (1, 1, −2) is the required centroid.


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