Consider the n-gon and triangles from the previous question now with n4. Suppose you select 3 corners of the polygon at random. What is the probability that the triangle formed does not share any sides with the n-gon sides. For example, this red triangle does not share any sides in common with the octagon. Again you should assume the corners of the n-gon are distinguishable. Briefly explain your answer. State your answer and briefly show your work