How many sides does a regular polygon have if each exterior angle measures 20°?
a.
17 sides
b.
20 sides
c.
21 sides
d.
18 sides

Sum of exterior angles of any polygon is 360 degrees. 
Each exterior angle of a regular polygon = 360/n where n is the number of sides. 
So, n = 360/20 = 18. Your answer is D

Hope this helps.

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for