Answer:
Linear scale factor
The size of an enlargement/reduction is described by its scale factor.
For example, a scale factor of 2 means that the new shape is twice the size of the original.
A scale factor of 3 means that the new shape is three times the size of the original.
To calculate the scale factor, we use the following:
You can get the 'big' and 'small' from the corresponding sides on the figures.
Explanation: