document.write( "Question 182744: 10. If angle s =49 and angle t = 11, then angle r = ______. \n" ); document.write( "
Algebra.Com's Answer #146093 by Alan3354(69443)\"\" \"About 
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If angle s =49 and angle t = 11, then angle r = ______.
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\n" ); document.write( "If they're all angles in the same triangle, then r = 120º.
\n" ); document.write( "The sum of the angles of all (planar) triangles is 180º.
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