Given two segments a and b that are comparable at x, show how to determine in O(1) time which of a ≼ x b or b ≼ x a holds( Assume that neither segment is vertical. If a and b do not intersect, you can just use cross products. If a and b intersect-which you can of course determine using only cross products you can still use only addition, subtraction, and multiplication, avoiding division. Of course, in the application of the ≼ x relation used here, if a and b intersect, we can just stop and declare that we have found an intersection.