If a vertex of a triangle is (1, 1) and the mid-points of two sides through this vertex
are (-1, 2) and (3, 2), then the centroid of the triangle is

• 1st vertex coordinate is (1,1)
  2nd vertex coordinate is((2*-1)-1,(2*2)-1)=(-3,3)
  3rd vertex coordinate is ((2*3)-1.(2*2)-1)=(5,3)
  so coordinate of centroid is ((1+-3+5)/3,(1+3+3)/3))=(1,7/2)
• 10 years agoHelpfull: Yes(0) No(1)