If both x and y are integers, then the point P(x,y) is called a lattice point of the plane. Suppose Pi, 1 <= i <= 5, are five (different) lattice points. We form a complete graph using these 5 points and the unique straight line segments (edges) determined by the C(5,2) = 10 pairs of these points. For any given values of lattice points, the minimum number of edges which will have its midpoint (of the line segment corresponding to that edge) as a lattice point is:
- 1
- 2
- 3
- 4
Explain what they are asking and then the solution. I am not able to understand question also