Work in groups of 3 with cutouts of the pairs of triangles and categorize them by what congruence theorem can be used to prove congruence. Separate them on individual papers and each paper should be labeled with one of the theorems (SSS, SAS, ASA, AAS, HL), but also have a paper for NOT ENOUGH INFO and MORE THAN ONE THEOREM.
Sort through the 24 pairs and categorize them. Tape your cards to the paper that you believe corresponds to the congruence theorem for that card. If you put a pair on the NOT ENOUGH INFO or MORE THAN ONE THEOREM chart paper, you must write an explanation on your card to justify the placement.