ROTATIONS IN THE COORDINATE PLANE

ROTATIONS IN THE COORDINATE PLAN

90⁰ Rotation To rotate a point 90⁰ counterclockwise about the origin,

multiply the y-coordinate by -1 and then interchange the x- and y-coordinates.

Symbols (x,y)(-y,x)

To rotate a point 90⁰ clockwise about the origin, multiply the x-coordinate by -1 and then interchange the x- and y-coordinates.

Symbols (x,y) (y,-x)

ROTATIONS 180⁰ Rotation To rotate a point 180⁰ counterclockwise or

clockwise about the origin, multiply the x- and y- coordinates by -1.

Symbol (x,y)(-x,-y)