What does Cpctc mean?
corresponding parts of congruent triangles are congruent
CPCTC is an acronym for corresponding parts of congruent triangles are congruent. CPCTC is commonly used at or near the end of a proof which asks the student to show that two angles or two sides are congruent.
How do you know if it is SAS or Social Security?
For two triangles to be congruent, SAS theorem requires two sides and the included angle of the first triangle to be congruent to the corresponding two sides and included angle of the second triangle. are not between the corresponding congruent sides. Such a theorem could be named, for example, SSA theorem.