No. 1 Given are the vertices of ∆ABC: A (–7; –2); In (–7; 4); C (5; –5). Find: a) The equation of the side AB; b) Equation of height CH; c) the equation of the median AM; d) the point N of the intersection of the median AM and the height of the CH; d) the equation of a line passing through the vertex C and parallel to the side AB; e) the distance from point C to line AB.

№2 The equations of the sides of the quadrangle are given: x - y = 0; x + 3y = 0; x - y - 4 = 0; 3x + y - 12 = 0. Find the equations of its diagonals.