Answer:
Step-by-step explanation:
If they are explicitly shown on the picture they are given. So the picture shows PQ and SR are equal because of those lines marked in the middle of them.
Same for the two angles, that little curve in them means they are the same, so that's given.
QS is the same line as QS so that's reflexive like you have, so now you have an SAS relationship. Does that make sense? or does it answer your question about how you know which is which?
