Find the centroid of a triangle with vertices (0,0),(6,0),(0,0), (6,0),(0,0),(6,0), and (0,6)(0,6)(0,6).
(6,6)(6, 6)(6,6)
(2,2)(2, 2)(2,2)
(0,0)(0, 0)(0,0)
(3,3)(3, 3)(3,3)