Let A (x1, y1), B (x2, y2) and C (x3, y3) be the vertices of triangle ABC.
Let D (-2, 3), E (4, -3) and F (4, 5) be the mid-points of sides BC, CA and AB respectively.
As D is the mid-point of BC
Similarly E and F are the mid-points of AC and AB
Thus, the coordinates of C are (-2, -5)
Hence, the vertices of triangle ABC are A (10, -1), B (-2, 11) and C (-2, -5).
Therefore, the coordinates of the centroid of triangle ABC are
