perigon, round angle

turn (angle)

full turn, turn

round angle, turn

2pi, Centiturn, Complete rotation, Cycle (angular unit), Cyclus (geometry), full rotation, Full turn, Half turn, Microturn, milliturn, Number of cycles, Number of revolutions, Number of rotations, number of turns, percentage protractor, Plane unit angle, Plenum angulum, plenus angulus, quarter turn, Rev (unit), revolution (angular unit), rotation (physics), Rotation count, round angle, tau (2pi), Tau circle constant, Tau constant, Turn (geometry), Unit angle, Unit plane angle, Vollwinkel

complete rotation, cyc, cycle, full circle, full turn, rev, revolution, rot