Five marks exercise problems XII — task. Mathematics State Board, Class 9.

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(\frac{3}{2}, 5)

(7, \frac{- 9}{2})

and

(\frac{13}{2}, \frac{- 13}{2})

are mid-points of the sides of a triangle, then find the centroid of the triangle.

The centroid of the triangle \(=\)

(i, i)

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18. Five marks exercise problems XII