Answer:
Take all the five points to form a pentagon. The total number of polygons formed by n points is (n - 1)!/2. (Number of cyclic permutations = (n - 1)!, divided by 2 to not count them twice, once clockwise and once counterclockwise.) For n = 5 this gives 12 pentagons.
Step-by-step explanation:
Correct if I'm wrong
