Answer key for triangle congruence proof practice, illustrating three examples with diagrams and step-by-step solutions.

Triangle Congruence Proof Practice Answer Key worksheet with three geometry problems, each showing a triangle diagram and a table of statements and reasons for proving triangle congruence.

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1. Given
2. Definition of Angle Bisector
3. Reflexive Property of Congruence
4. SAS (Side-Angle-Side) Congruence Postulate
5. CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

1. Given
2. Definition of Midpoint
3. Vertical Angles Theorem
4. SAS (Side-Angle-Side) Congruence Postulate
5. CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

1. Given
2. Definition of Midpoint
3. SSS (Side-Side-Side) Congruence Postulate
4. CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

1. Given
2. Definition of Perpendicular Lines
3. Reflexive Property of Congruence
4. HL (Hypotenuse-Leg) Congruence Theorem
5. CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

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