Find the measure of each interior angle of a regular octagon

135 degrees

In a regular polygon, each interior angle has the same angle. So the eight angles in the octagon will have the same measure.

The formula for this type of problem is

(n-2) 180/n

n represents the number of sides

(8-2) 180/8

(6) 180/8

1080/8

135

So each of the eight angles in an octagon would equal to 135 degrees