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

Options

  1. A(-1, 7 3 )
  2. B( -1 3 , 7 3 )
  3. C(1, 7 3 )
  4. D( 1 3 , 7 3 )

Correct answer

C. (1, 7 3 )

Step-by-step solution

Vertex of triangle is (1,1) and midpoint of sides through this vertex is (-1,2) and (3,2) vertex B and C come out to be (-3,3) and (5,3) centroid is 1-3+5 3 , 1+3+3 3 (1,7 / 3)

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