document.write( "Question 513072: If angles are supplementary, then one of the angles is an obtuse angle.\r
\n" ); document.write( "\n" ); document.write( "is this always true sometimes true or never true.?
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Algebra.Com's Answer #342853 by umail08(87)\"\" \"About 
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Supplementary angles: sum of angles is equal to 180 degrees
\n" ); document.write( "Obtuse angle: measure of angle is greater than 90 degrees and less than 180 degrees.
\n" ); document.write( "Therefore:
\n" ); document.write( "We can represent the supplement of an angle by the phrase:
\n" ); document.write( "(180-x) degrees
\n" ); document.write( "So we can test some angles to determine what is the supplement:
\n" ); document.write( "If: x=80 degrees, then (180-x) = (180-100) = 80 degrees One angle is obtuse
\n" ); document.write( "If: x=90 degrees, then (180-x) = (180-90) = 90 degrees Neither angle is obtuse
\n" ); document.write( "If: x = 100 degrees, then (180-x) = (180-100) = 80 degrees One angle is obtuse
\n" ); document.write( "So we see that there is one case where neither angle is obtuse …
\n" ); document.write( "Therefore the answer would be “sometimes true”
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