Let PQR be a triangle with R(–1, 4, 2). Suppose M (2, 1, 2) is the mid-point of PQ. The distance of the centroid of Δ PQR from the point of intersection of the lines 1 3 z 2 y 0 2 x − + = = − and 1 1 z 3 3 y 1 1 x + = − + = − is-

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Let PQR be a triangle with R(–1, 4, 2). Suppose M (2, 1, 2) is the mid-point of PQ. The distance of the centroid of Δ PQR from the point of intersection of the lines 1 3 z 2 y 0 2 x − + = = − and 1 1 z 3 3 y 1 1 x + = − + = − is-

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