
William W. answered 12/07/21
Experienced Tutor and Retired Engineer
The first thing you need to know is that the total of the measure of ALL angles of any polygon, no matter how many sides it has, is 360°.
The second thing you need to know is that a REGULAR polygon has all angles that are the same.
So if there are 25 angles, all the same, and the total is 360° then what would be the measure of each one?