document.write( "Question 1010570: Given AD= BC and AB = CD
\n" ); document.write( "Prove triangle CDB is congruent To triangle ABD
\n" ); document.write( "

Algebra.Com's Answer #626094 by ikleyn(52803)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "Given AD= BC and AB = CD
\n" ); document.write( "Prove triangle CDB is congruent To triangle ABD
\n" ); document.write( "--------------------------------------------------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Apply SSS-test for triangles.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You can also look into the lesson Properties of the sides of a parallelogram in this site, Theorem 2:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "    If in a convex quadrilateral the opposite sides are of equal length by pairs,  then the quadrilateral is a parallelogram.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );