Counter-clockwise Rotation Exploration – GeoGebra

Rotating Shapes About The Origin by Multiples of

How to Rotate around a Point in GeoGebra

Reasoning about linkages with dynamic geometry - ScienceDirect

Clockwise rotation of perspective view improves spatial recognition of complex environments in aging

Parallel and Perpendicular LInes

Geogebra 7

Let's Learn The Unit Circle/Angles in Standard Position/Arc Length

Three cool facts about rotations of the circle – David Richeson: Division by Zero

Lesson 14: Defining Rotations