Proofs with Triangles Self-check Practice

In this triangle theorems worksheet, students identify the theorem used to prove the specified triangular relationship. Students are shown an illustration of two or more triangles. They identify the postulate that would be used to prove that two triangles are congruent. All questions are multiple choice and self-scoring. When the "check your work" button is selected, problems are marked as correct or incorrect, a short explanation of each answer is given.