document.write( "Question 275997: The second angle of a triangle is 4 times as large as the first. The third angle is 80° more than the sum of the other two angles. Find the measure of the second angle. \n" ); document.write( "
Algebra.Com's Answer #201203 by mananth(16946)\"\" \"About 
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The second angle of a triangle is 4 times as large as the first. The third angle is 80° more than the sum of the other two angles. Find the measure of the second angle. \r
\n" ); document.write( "\n" ); document.write( "let one angle be x\r
\n" ); document.write( "\n" ); document.write( "the second angle will be 4x\r
\n" ); document.write( "\n" ); document.write( "The third angle will be 80 more than (x+4x)\r
\n" ); document.write( "\n" ); document.write( "= x+4x+80\r
\n" ); document.write( "\n" ); document.write( "The sum of the angles of the triangle = 180 deg\r
\n" ); document.write( "\n" ); document.write( "x+4x+x+4x+80=180\r
\n" ); document.write( "\n" ); document.write( "10x=180-80
\n" ); document.write( "10x=100
\n" ); document.write( "x=10 first angle\r
\n" ); document.write( "\n" ); document.write( "Second angle is 40\r
\n" ); document.write( "\n" ); document.write( "Third angle is 130 deg.
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