(i) Area of triangle formed by y = m1x + c1, y = m2x + c2 and x = 0 is sq.units.
(ii) Area of triangle formed by y = m1x + c1, y = m2x + c2 and y = m3x + c3 is sq.units.
(iii) Area of a parallelogram formed by the lines ax + by + p = 0, ax + by + q = 0, cx + dy + r = 0 and cx + dy + s = 0 is
(iv) If the sides of a triangle are a1x + b1y + c1 = 0, a2x + b2y + c2 = 0 and a3x + b3y + c3 = 0 then, the area of the triangle is
(v) The area of the rhombus formed by ax ± by ± c = 0 is