This module teaches how to prove triangle congruence using the SSS, SAS, ASA, and SAA congruence postulates. It covers the properties of congruence, applying congruence to prove triangles are congruent, and identifying which postulate can be used to prove triangles congruent based on given corresponding parts. The module contains lessons on the properties of congruence, congruent triangles, SSS congruence, SAS congruence, ASA congruence, and SAA congruence.