1.

If the centroid of a triangle is at (-2,1),and two of its vertices are (1, -6) and (-5,2) then find thethird vertex of the triangle.​

Answer»

Answer:

If the centroid of a TRIANGLE is at (-2,1),and TWO of its VERTICES are (1, -6) and (-5,2)

- 2 = \frac{1 - 5 + x}{3} \\ - 6 = - 4 + x \\ x = - 2

1 = \frac{ - 6 + 2 + y}{3} \\ 3 = - 4 + y \\ y = 7

then the third vertex of the triangle is (-2, 7).


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