1. The problem is to understand the SSS, SAS, and ASA criteria for triangle congruence. 2. SSS (Side-Side-Side) means if three sides of one triangle are equal to three sides of another triangle, the triangles are congruent. 3. SAS (Side-Angle-Side) means if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent. 4. ASA (Angle-Side-Angle) means if two angles and the included side of one triangle are equal to two angles and the included side of another triangle, the triangles are congruent. 5. These criteria help prove the congruence of triangles without needing to measure all sides and angles. 6. So, statements like "SSS, SAS, or ASA stuff" refer to these specific sets of equal parts that ensure two triangles are identical in shape and size.