document.write( "Question 817801: To prove that ABCD is a parallelogram, you would have to first prove triangle ACD is congruent to triangle CAB by using which of the following?\r
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Algebra.Com's Answer #492198 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi, 
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document.write( "To prove that ABCD is a parallelogram BY FIRST proving triangle ACD is congruent to triangle CAB: 
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document.write( "Use ASA Congruence Postulate
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document.write( "(Note: AC is congruent to itself & alternate interior angles of Transversal AC are Equal )
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