\"\"

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Given:   \"\"

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Prove:   PQRS is a parallelogram

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Proof:

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\"\"Statements                                                  Reasons

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a.     \"\"                              a. Given

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b.     \"\"                             \"\" b.Vertical angles are congruent

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c.      \"\"                           c. AAS postulate

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d.     \"\"                                       d.CPCTC 

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e.     \"\"                                        e. If alt.int.angles are congruent, then lines are \"\"

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f.      PQRS is a parallelogram            f. If one pair of opp. sides is \"\" and \"\",then the quad. is \"\".