G.1.17.3 Reflecting On Reflection

Diego says, “I know I can use a sequence of rigid transformations to take RSTU onto R'S'T'U', but it looks like for this picture just a single reflection would get the job done, but I’m not sure where the line of reflection would be.” Help Diego by finding the line of reflection below. Explain how you found the line of refelction.

Let's generalize what you explored above. Fill in the rest of the sentence below: To find the line of reflection that will take one shape onto another you find __________________ (this is only true when there is just a reflection to take one object onto another)