document.write( "Question 673359: i am having trouble understanding how to find the measure of s supplementary angle. i understand it has to equal 180, but how do i figure out which angles need which numbers? \n" ); document.write( "
Algebra.Com's Answer #418623 by Alan3354(69443)\"\" \"About 
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i am having trouble understanding how to find the measure of s supplementary angle. i understand it has to equal 180, but how do i figure out which angles need which numbers?
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\n" ); document.write( "\"it\" doesn't equal 180.
\n" ); document.write( "The sum of 2 supplementary angles = 180 degs
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\n" ); document.write( "The supplement of angle A = 180 - A
\n" ); document.write( "If you know one angle, you subtract to find the other one.
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