This video lecture from Conic Sections (F.Sc. second year Mathematics) covers: some theorems on circle like the perpendicular bisector of any chord of a circle passes through the centre of the circle and the line joining the centre of a circle to the midpoint of a chord is perpendicular to the chord. 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.