Question

what is the difference between using transformations to create similar figures versus transformations to create congruent figures ?

Answer 1

you can't use dilation for congruent figures while you can if it's similar figures

Explanation:

Answer 2

Transformations the produce similar figures include:
Dialation
Rotation
Translation
Reflection

Transformations that produce congruent figures include:
Rotations
Translations
Reflections