90 Degree Clockwise Rotation (Definition, Examples) Byjus

Rotating shapes about the origin by multiples of 90° (article)

Rotate the red point about the black point 90 degrees counter clockwise.

Rotations about a Point: Geometry - Math Lessons

Rotation in Math, Definition, Rules & Examples - Lesson

Rotating about a Point other than the Origin (90 Degrees Clockwise and Counter-Clockwise)

Determining angle of rotation

Rotate the red point about the black point 90 degrees counter clockwise.

What is Rotation in Math? (Definition, Properties, Examples) - BYJUS

Transformations - Rotation, Translation, Reflection, Dilation

Geometry Rotations Clockwise and Counterclockwise Explained! — Mashup Math