How to determine the scale factor of a dilation for enlargement

The video tutorial explains how to determine if a transformation is an enlargement or reduction by comparing two triangles, A and B. It introduces the concept of scale factors, explaining that a scale factor greater than 1 indicates enlargement, while less than 1 indicates reduction. The tutorial demonstrates calculating the ratio of side lengths to find the scale factor, showing that triangle B is an enlargement of triangle A by a factor of 2.

What does it mean when the scale factor is greater than 1?

Explain why the ratio of the lengths from A to B is expressed as 8/4.