Quantities of Rotational Kinematics

The angle of rotation is a measurement of the amount (the angle) that a figure is rotated about a fixed point— often the center of a circle.

Angular velocity ω is the rate of change of an angle, mathematically defined as ω = $\Delta \theta$$/\Delta t$ .

Angular acceleration is the rate of change of angular velocity, expressed mathematically as $\alpha = \Delta \omega/\Delta t$ .