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Section 4.1  Apply Triangle Sum Properties
Section 4.2  Apply Congruence and Triangles
Section 4.3  Prove Triangle Congruence by SSS
Section 4.4  Prove Triangle Congruence by SAS and HL
Section 4.5  Prove Triangle Congruence by ASA and AAS
Section 4.6  Use Congruent Triangles
Section 4.7  Use Isosceles and Equilateral Triangles
