12.3 Transforming shape (MATH)

You can use combination of reflections, translations and rotations to transform a shape.
You can also describe the transformation that maps an object onto its image.

To describe a reflection you must give:

• the equation of the mirror line.

To describe a translation you must give:

• the column vector.

To describe a rotation you must give:

• the centre number
• the number of degrees of the rotation (or fraction of a whole turn)
• the direction of the rotation (clockwise or anticlockwise).

You may check this website if you still didn't understand:

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