document.write( "Question 533801: ABCD is parallelogram. if the two diagonals are equal. find the measure of angleABC. with steps \n" ); document.write( "
Algebra.Com's Answer #351167 by Edwin McCravy(20060)\"\" \"About 
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Since the diagonals are equal, the parallelogram is a rectangle,
\n" ); document.write( "and all four interior angles of a rectangle are 90°. So that's
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