53. Suppose that equally spaced dots are marked on each side of a regular polygon, with a dot at each vertex, and that the distance between consecutive dots is the same for all sides. The figure below shows 4 equally spaced dots per side, including a dot at each vertex, for an equilateral triangle. Which of the following expressions represents the number of dots for a regular polygon with n equally spaced dots, including one at each vertex, marked on each of its s sides?
Your Answer is
Correct Answer is C
Explanation
First of all, for an S-gon, if each side has n points, then the ns points count the points on each vertex twice, and because there are s vertices in total, the correct The general term formula should be equal to ns-s