Reflection and Rotation

Reflection

Flips a shape over a mirror line - the image is the same distance from the line as the original, just on the other side, like a shape and its reflection in a still dam.

Reflecting in the y-axis: (x,y) → (-x,y). Reflecting in the x-axis: (x,y) → (x,-y).

Rotation

Turns a shape around a fixed point (the centre of rotation) by a given angle - like turning a steering wheel.

90° clockwise about the origin: (x,y) → (y,-x).

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