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 Challenge
 Rotation:  A transformation that turns a figure about a fixed point at a given angle and a given direction.

Twice Reflected over Intersecting Lines: Find an equation that relates the angles formed by intersecting lines and points reflected over these lines.

Rotating Coordinates: What the location of (x,y) if you rotate 90 degrees counterclockwise? 180 degrees counterclockwise? 270 degrees counterclockwise? Explain how you found your answer.

Transformations: Explore transformations of quadrilaterals.