Feb 02 2010
Math
http://www.analyzemath.com/Geometry/rotation.html
http://www.mathsisfun.com/geometry/rotation.html
http://www.learner.org/courses/learningmath/geometry/session7/part_b/index.html
http://illuminations.nctm.org/LessonDetail.aspx?ID=L466#r1
http://www.winpossible.com/lessons/Geometry_Translation,_Reflection,_Dilation,_and_Rotation.html
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