This video lecture from Geometry (F.Sc. second year Mathematics) covers: Question number 4, 5 and 6 of exercise 4.4. In question 4 we have to find the condition that the given three lines are concurrent. In question 5 we have to find an unknown in the equation of line, where three lines are given concurrent at a point. In question 6 we show the three given lines as concurrent and also that the third line bisects the angle formed by first two lines. 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.