Proof for Theorem
Prove: If a quadrilateral has one pair of opposite sides both parallel and congruent, then it is a parallelogram.
Prove: If a quadrilateral has one pair of opposite sides both parallel and congruent, then it is a parallelogram.
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Statements |
Reasons |
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Given |
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Reflexive property |
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If 2 || lines are cut by a trans., the alternate interior ∠s are  . |
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SAS-if 2 sides and the included ∠ of one triangle are to the corres. parts of the other, the triangles are . |
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CPCTC-corres. parts of triangles are . |
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If a quad. has its opposite sides congruent, the quad. is a parallelogram. |
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