Question

the measure of all angles of pentagon is equal .find the measure of each equal angles.​

Answer 1

Answer:

Now the measure of each central angle is equal to 360/5 = 72 degrees. So, the measure of the central angle of a regular pentagon is equal to 72 degrees. A pentagon has five sides.

...

Angles in a Pentagon.

General Rule

Measure of each of the Angle (in a Regular Polygon) = 180 degrees ×(n−2) / n, where n is the number of sides