Central Angle of N-gon is the angle made at the center by any two adjacent vertices of the N-gon. And is denoted by ∠Central. Central Angle of N-gon is usually measured using the Degree for Angle. Note that the value of Central Angle of N-gon is always positive. Typically, the value of Central Angle of N-gon lies in the range from 0 to 360.