A full angle, also called a complete angle, round angle, or perigon, is an angle equal to 
radians 
corresponding to the central angle of an entire
circle.
Four right angles or two straight angles equal one full angle.
Full Angle
See also
Acute Angle, Angle, Central Angle, Obtuse Angle, Reflex Angle, Right Angle, Straight AngleExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Full Angle." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/FullAngle.html