In GCSE Mathematics, a transformation is the movement or manipulation of a shape/object such that it appears elsewhere on a surface - usually a computer screen - so understanding transformations can be important in creating realistic looking graphics in computer games.
There are four types of transformations you need to know
reflection - this will require the equation of the reflection line (aka mirror line)
rotation - an angle, direction and centre of rotation are required to mathematically describe this transformation
translation - movement across left/right and then up/down - this movement would be described by a vector
enlargement - a scale factor and centre of enlargement are required for this transformation
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