出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/07/26 11:06 UTC 版)
In geometry, CPCTC is the abbreviation of a theorem involving congruent triangles. CPCTC stands for Corresponding Parts of Congruent Triangles are Congruent. CPCTC states that if two or more triangles are proven congruent by: ASA, AAS, SSS, HL, or SAS, then all of their corresponding parts are congruent as well. CPCTC is especially useful in proving various geometrical problems and theorems.