To find the measure of each exterior angle of a regular pentagon, you can use the formula for the exterior angle of a regular polygon, which is given by:
\[ \text{Exterior angle} = \frac{360°}{n} \]
where \( n \) is the number of sides of the polygon. For a pentagon, \( n = 5 \).
Plugging in the values:
\[ \text{Exterior angle} = \frac{360°}{5} = 72° \]
Therefore, the measure of each exterior angle of a regular pentagon is 72°.