This worksheet has 5 proofs for using the theorem Corresponding Parts of Congruent Triangles are Congruent (CPCTC). The proofs include proving triangles congruent by ASA, AAS, and SAS. The proofs also include previous material, such as Reflexive Property of Congruence, Alternate Interior Angles Theorem, Corresponding Angles Postulate, Definition of Perpendicular Lines, Definition of Midpoint, Definition of Angle Bisector, and Definition of Segment Bisector. This worksheet helps students to review previous chapters' theorems and postulates. It is the perfect length for classwork practice.