Understanding 2D Rotation

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This Demonstration allows you to rotate 2D objects. The red square represents the rotated version of the blue square.
Contributed by: Roger Germundsson (March 2011)
Open content licensed under CC BY-NC-SA
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Details
This Demonstration allows you to manipulate 2D rotations of objects. It is one in a series of twelve covering TranslationTransform, RotationTransform, ScalingTransform, ReflectionTransform, RescalingTransform and ShearingTransform in 2D and 3D.
Permanent Citation
"Understanding 2D Rotation"
http://demonstrations.wolfram.com/Understanding2DRotation/
Wolfram Demonstrations Project
Published: March 7 2011