1.

If a vertex of a triangle is (1, 1) and the midpoints of two sides of the triangle through this vertex are (-1, 2) and (3, 2), then the centroid of the triangle is

A. \(\left( { - \frac{1}{3},\frac{7}{3}} \right)\)
B. \(\left( { - 1,\frac{7}{3}} \right)\)
C. \(\left( {\frac{1}{3},\frac{7}{3}} \right)\)
D. \(\left( {1,\frac{7}{3}} \right)\)
Answer» E.


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