In geometry, CPCTC is the abbreviation of a theorem asserting that two triangles are congruent. CPCTC stands for Corresponding Parts of Congruent Triangles are Congruent. CPCTC states that if two or more triangles are congruent, then all of their corresponding parts are congruent as well.

If

then the following conditions are true:

A related theorem is CPCFC, in which triangles is replaced with figures so that the theorem applies to any polygon or polyhedron.

External links

• Dr. Math explains the importance of CPCTC
• A poem for CPCTC