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Rigid Motions (Isometries)

Rotation examples

In physics, rotation is a circular motion of an object around a center of rotation. A three-dimensional object always rotates around an imaginary line called a rotation axis. If the axis passes through the body's center of mass, the body is said to rotate upon itself, or spin. A rotation about an axis that passes through the head is called a "rotation of the head", or a "nodal rotation".

Kurt Kleinberg

Line reflections examples

Line reflections lecture

Rotation examples

Rotations lecture

Translations examples

Translations intro