Problem 3. (Classify Vertices) Problem 3 in the textbook Preparata&Shamos (p. 148) Given a point p and a vertex v of a convex polygon P in the plane, give an algorithm to classify in constant time vertex v with respect to pv (as concave or supporting or reflex). Problem 3. (Classify Vertices) Problem 3 in the textbook Preparata&Shamos (p. 148) Given a point p and a vertex v of a convex polygon P in the plane, give an algorithm to classify in constant time vertex v with respect to pv (as concave or supporting or reflex)