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Investigation of Rotations #1

Rotate a triangle about the origin and discover the rules for rotations of 90, 180, and 270 degrees in a CCW direction, as well as the relationship between the original points and the rotated points. Move the slider to the right to see the different images as you rotate the figure. What patterns do you notice in the changes of the points for each angle measure (90, 180, or 270 degrees)?