- Given
- Definition of a parallelogram
- Alternate Interior Angles Theorem
- Reflexive Property of Congruence
- ASA (Angle-Side-Angle) Congruence Postulate
- CPCTC (Corresponding Parts of Congruent Triangles are Congruent)
- Given
- Alternate Interior Angles Theorem
- Opposite sides of a parallelogram are congruent
- ASA (Angle-Side-Angle) Congruence Postulate
- CPCTC (Corresponding Parts of Congruent Triangles are Congruent)
- Given
- Definition of a rectangle
- All right angles are congruent
- Opposite sides of a rectangle are congruent
- Reflexive Property of Congruence
- SAS (Side-Angle-Side) Congruence Postulate
- CPCTC (Corresponding Parts of Congruent Triangles are Congruent)
Parent Tip: Review the logic above to help your child master the concept of proving parallelograms worksheet.