Transformations

the (x, y) stuff of unit 4

Reflections

a flip of a figure

Reflection Over the X-Axis

(X, Y) → (X, -Y)

Reflection Over the Y-Axis

(X, Y) → (-X, Y)

Reflection Over the Line Y = X

(X, Y) → (Y, X)

Reflection Over the Line Y = -X

(X, Y) → (-Y, -X)

Rotations

a turn of a figure

Rotation of 90° CW or 270° CCW

(Y, -X)

Rotation of 180° CW or 180° CCW

(-X, -Y)

Rotation of 270° CW or 90° CCW

(-Y, X)

Rotation of 360° CW or 360° CCW

(X, Y)