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Homework: Rotations

Topic:
Rotation

Was Johnny correct?

Johnny said he rotated this image 180 degrees about the origin and recorded the following points for his new image: A’ (-3,2), B’ (-3,4), C’ (-5,4), D’ (-5,8), E’ (-7,8), F’ (-7,4), G’ (-9,4), H’ (-9,2). Did he do the rotation correctly, why or why not?