How i solve the question of class 9th ncert math of Quadrilaterals chapter of exercise 8.2 of question no 4 . I think it is very important question of class 9th give me the tricky way for solving this question ABCD is a trapezium in which AB || DC, BD is a diagonal and E is the mid-point of AD. A line is drawn through E parallel to AB intersecting BC at F (see Fig. 8.30). Show that F is the mid-point of BC.