The sum of the exterior angles if any polygon will always be equal to 360°, however the difference is that for a regular polygon each of its exterior angles has the same value.
to find the measure of an exterior angle in a regular polygon divide 360° into the number of sides
[tex]\frac{360}{n}[/tex]if the regular polygon has 12 sides
[tex]\frac{360}{12}=30[/tex]