He shows the formula to find it which is 360/n, where n is the number of sides of the regular polygon. He goes on further to explain the formula by taking an 18-sided regular polygon as example and computes its exterior angle as 360/18, which is 20 degrees
The length of the side of the polygon is
we know that
the formula to calculate the distance between two points is equal to
substitute the values
Lenght of this side of the polygon is 36
i dont get it at all?