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Rotations

Angle of Rotation

Using the diagram find the measure of the angle of rotation.

Determine the angle of rotation. Express as a clockwise rotation.

Finding the Center of the Rotation

To find the center of the rotation. construct the segment connecting P to P' Construct the perpendicular bisector of this segment. Construct the segment connecting Q to Q' OR R to R'. Construct the perpendicular bisector of this segment. Find the point of intersection of the two perpendicular bisectors. This is the center of the rotation!