The measure of each exterior angle of a regular pentagon is ______.

We know that the measure of each exterior angle of a regular polygon is $\frac{{360}^o}{\mathrm{n}}.$

Where ‘n’ is the number of sides of the polygon.

We also know that a pentagon has 5 sides, i.e. n = 5.

So, the measure of each exterior angle of the regular pentagon $=\frac{{360}^o}{5}={72}^o$