Hello!
CPCTC is an acronym for corresponding parts of congruent triangles are congruent. CPCTC is most commonly used near the end of a proof which asks somebody to show that two angles or two sides are congruent.
Corresponding means they're in the same position in the 2 triangles.
I think this is correct, I got it from my notebook
I hope this helps, and have a nice day!
