3) Find the area of the triangle with vertices A (5, 6, 2), B (7, 16, 4), and C (6, 7, 3). 4) Determine if the pair of lines x = 1 + 6t, y = 3 - 7t, z = 2 + t and x = 10 + 3s, y = 6+ s, z = 14 + 4s are parallel, are the same line, or intersect at a single point. If they intersect at a single point determine the point of inter