document.write( "Question 575618: Angle a and angle b are supplementary and equal. How many degrees does angle a measure? \n" ); document.write( "
Algebra.Com's Answer #369553 by JBarnum(2146)\"\" \"About 
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angle a = angle b
\n" ); document.write( "angle a + angle b = 180
\n" ); document.write( "angle a + angle a = 180
\n" ); document.write( "2 times angle a = 180
\n" ); document.write( "angle a = 180/2
\n" ); document.write( "angle a = 90
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