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Question 91
What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(4, 0) and C(-2, 2)?
Solution
centroid = $$(\frac{x_{1}+x_{2}+x_{3}}{3} , \frac{y_{1}+y_{2}+y_{3}}{3})$$ = $$(\frac{1+4-2}{3} , \frac{-5+0+2}{3})$$ = $$(1 , -1)$$
so the answer is option A.
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