Final answer:
The subject addresses the proof of triangle congruence in mathematics, which requires specific information on the triangles’ sides and angles to apply congruence criteria like SSS, SAS, ASA, AAS, or HL.
Step-by-step explanation:
The question is about the mathematical concept of triangle congruence. To discuss the congruence of two triangles, you must have enough information about their sides and angles, which adhere to specific congruence criteria such as Side-Side-Side (SSS), Side-Angle-Side (SAS), Angle-Side-Angle (ASA), Angle-Angle-Side (AAS), or Hypotenuse-Leg (HL) for right triangles.
When proving triangles are congruent, you are demonstrating that they are identical in terms of size and shape. This involves showing that all corresponding sides and angles are congruent. For instance, if triangles #10 and #11 have all three sides equal in length (SSS criterion), or two sides and the included angle are equal (SAS criterion), they can be declared congruent. These proofs ensure that any subsequent discussions about the triangles' properties are based on a solid mathematical foundation.