Congruent Triangles - Two angles and included side (ASA) Definition: Triangles are congruent if any two angles and their included side are equal in both triangles.To become certified professionals, students must complete coursework in economics, statistics, and corporate finance. Typically, an actuary has an undergraduate degree in mathematics, actuarial science, statistics, or some other analytical field. Actuaries must have a strong background in mathematics, statistics, and business.Congruence and Triangles Can you please explain how to determine, using SSS, SAS, and ASA, how a shape is congruent or not? SSS, ASA, SAS Proofs Triangle Congruence I don't understand how to tell if two triangles are congruent. Triangle Congruence, a selection of answers from the Dr.