How can you use the transformation to prove two triangles are congruent

You could use a translation to move one to the same position as the other and compare if they have the same orientation (like both are pointing up).
If not, you could use rotation to do so, then use translation. Sometimes even reflections might work, but that's a bit more complex.

put like terms together.orremember that the 45 becomes negative when moved to the other side.orthe minuses cancel out.