document.write( "Question 276837: Can you please help me with this proof? Thanks.\r
\n" ); document.write( "\n" ); document.write( "Prove: If both pairs of opposite angles of a quadrilateral are congruent, then the quadrilateral is a paralellogram.\r
\n" ); document.write( "\n" ); document.write( "I started it by saying:
\n" ); document.write( "Given: Angle B is congruent to Angle D.
\n" ); document.write( "and Angle A is congruent to Angle C.\r
\n" ); document.write( "\n" ); document.write( "Prove: ABCD is a paralellogram.\r
\n" ); document.write( "\n" ); document.write( "Thank you very much!
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Algebra.Com's Answer #201692 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "I just did this one, and probably for you.\r
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\n" ); document.write( "\n" ); document.write( "http://www.algebra.com/algebra/homework/Geometry-proofs/Geometry_proofs.faq.question.276811.html\r
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