`A (3,4 ), B (-3, 0) and C (7, -4)` are the vertices of a triangle. Show that the line joining
Channel: Doubtnut
Date: 05/04/2020

`A (3,4 ), B (-3, 0) and C (7, -4)` are the vertices of a triangle. Show that the line joining the mid-points `D (x_1, y_1), E (x_2, y_2) and F (x, y)` are collinear. Prove that `(x-x_1) (y_2 - y_1) = (x_2 - x_1) (y-y_1)`