Question

Find the centroid of the triangle whose vertices are $A(7,-8),B(-9,7),C(8,13)$.

Answer 1

centroid $(x,y)$

$=\frac{x_1+x_2+x_3}{3},\frac{y_1+y_2+y_3}{3}=\frac{7-9+8}{3},\frac{-8+7+13}{3}=(2,4)$