This video lecture from Geometry (F.Sc.second year Mathematics) covers: Question number 7 of exercise 4.4. In this question three vertices of triangle are given and we have to find the coordinates of centroid, orthocenter and circumcenter of the triangle. We also show either these points (centroid, orthocenter and circumcenter) are collinear or not. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.