Proof for Theorem
Prove: If a quadrilateral has 2 sets of opposite sides congruent, then it is a parallelogram.
Prove: If a quadrilateral has 2 sets of opposite sides 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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SSS - If 3 angles of 1 Δ are congruent to the corres. parts of another Δ, the Δs are  . |
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CPCTC - Corres. parts of congruent triangles are . |
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If 2 lines are cut by a trans. and the alternate interior angles are congruent, the lines are parallel. |
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Def: A parallelogram is a quad. with 2 pair of opposite sides parallel. |
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