Rotation

Definition:

a transformation that turns a figure around a point called the center of rotation

Function Rule: (counterclockwise rotations)

90 degree rotation from origin- (x,y) : (-y,x)

180 degree rotation from origin- (x,y) : (-x,-y)

270 degree rotation from origin- (x,y) : (y,-x)


*examples below are for counterclockwise rotations

Function Rule: (clockwise rotations)

90 degree rotation from origin- (x,y) : (y,-x)

180 degree rotation from origin- (x,y) : (-x,-y)

270 degree rotation from origin- (x,y) : (-y,x)

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For Your Knowledge!

-rotation is a form of isometry

-Everyday Example of Rotation: opening a door