Corresponding Parts of Congruent Triangles are Congruent (CPCTC) - visual example showing two congruent right triangles with equal sides and angles.

Two congruent right triangles, △ABC and △LMN, with corresponding parts labeled. Triangle ABC is yellow and triangle LMN is blue. Both have a right angle at B and M, and markings indicate corresponding sides and angles are equal. Text below states "If △ABC ≅ △LMN then AB = LM, AC = LN, BC = MN, ∠BAC = ∠MLN, ∠BCA = ∠MNL, ∠ABC = ∠LMN" and "By CPCTC".