### First, you should look at our C Grade topic - 'Enlarge a shape by any positive scale factor'

Enlarging a shape by a negative scale factor follows exactly the same process as all other enlargements.

Enlargement by a negative scale factor does not mean the shape gets smaller! It only gets smaller if the scale factor is between 0 and 1.

Two special things happen when you enlarge a shape by a negative scale factor though:
- The shape will end up on the opposite side of the centre of enlargement, compared to the original
- The shape will end up upside down.

If a scale factor is zero, then there would be no shape because after multiplying each coordinate by zero, all coordinates would be the origin. Hence, a dilation cannot have a scale factor of 0.

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