Which pairs of triangles can be shown to be congruent using rigid motions?

select congruent or not congruent for each pair of triangles.

congruent not congruent

△abc and △efg

△abc and △jkl

△jkl and △srq

△qrs and △def

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?