Which expression find the measure of each exterior angle of a regular pentagon with n number of sides?

I'm guessing, but did you mean to ask about a regular POLYGON?
Each exterior angle of a regular POLYGON =360 degrees / (number of sides)
So for a triangle 360 / 3 = 120
a square 360 / 4 = 90
a pentagon 360 / 5 = 72
a hexagon 360 / 6 = 60
and so on.
Source:http://www.1728.org/polygon.htm

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Step-by-step explanation: