document.write( "Question 670728: Here is the picture I made to go along with this: http://tinypic.com/r/14n0ifc/6\r
\n" ); document.write( "\n" ); document.write( "Given: AB || CD ; BC || CD
\n" ); document.write( "Prove: angle B is congruent to angle D\r
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Algebra.Com's Answer #417079 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
http://tinypic.com/view.php?pic=14n0ifc&s=6
\n" ); document.write( "Angle B congruent to Angle C (alternate interior angles of parallel lines AB and CD)
\n" ); document.write( "Angle D congruent to Angle C (alternate interior angles of parallel lines BC and DE)
\n" ); document.write( "Angle B congruent to Angle D by the Transitive Property of Equality (If a = b and b = c, then a = c).\r
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