DHS - 3.2
№ 1.10. Vertices ∆АВС are given: А (–3; –3); B (5; –7); C (7; 7). Find a) Equation side AB; b) Equation of height CH; c) the median AM equation; d) the intersection point N of the median AM and the height of the SN; e) the equation of a straight line passing through the vertex C and parallel to the side AB;
e) distance from point C to straight line AB.
№ 2.10. Find the point O of the intersection of the diagonals of the quadrilateral ABCD; if A (–1; –3); B (3; 5); C (5; 2); D (3; –5).