document.write( "Question 1180878: ABCD is a cyclic quadrilateral unscribed in a circle BC, CD, AB//DC and angle DBC=50, find angle ADB \n" ); document.write( "
Algebra.Com's Answer #810673 by ikleyn(52786)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "In any cyclic quadrilateral, the sum of opposite angles is 180 degrees.\r
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