Rotations - Geometry Abroad

Understandable Definition:  A rotation  is the turning of a figure around a point a positive number of degrees, clockwise or counterclockwise.

Rotational Symmetry - Definition, Order, Examples

Euler's rotation theorem - Wikipedia

Definition of Order of Rotational Symmetry

Transformations - Types, Rules, Formulas, Graphs, Examples

Rigid Transformations (Isometries) - MathBitsNotebook(Geo)

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math

An Algorithm for Quaternion–Based 3D Rotation

Reflection, Rotation and Translation (video lessons, examples and solutions)

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math

Points after rotation, Transformations, Geometry