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    Question

    In triangle ABC, the vertices are A(1, 2), B(7, 4) and

    C(4, 8). Find the coordinates of the centroid of the triangle.
    A (4, 14/3) Correct Answer Incorrect Answer
    B (4/7, 11/3) Correct Answer Incorrect Answer
    C (6, 10/3) Correct Answer Incorrect Answer
    D (4, 5/3) Correct Answer Incorrect Answer

    Solution

    Centroid G(x, y) = ((x₁ + x₂ + x₃)/3 , (y₁ + y₂ + y₃)/3) x-coordinate = (1 + 7 + 4)/3 = 12/3 = 4 y-coordinate = (2 + 4 + 8)/3 = 14/3 So centroid G is (4, 14/3).

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