document.write( "Question 551574: The second angle of a triangle is 3 times as large as the first. The third angle is 12 degrees more than the sum of the other two angles. Find the measure of each angle. \n" ); document.write( "
Algebra.Com's Answer #359827 by mananth(16946)![]() ![]() You can put this solution on YOUR website! angle I x \n" ); document.write( "Angle II 3x \n" ); document.write( "Angle III = x+3x+12= 4x+12\r \n" ); document.write( "\n" ); document.write( "x+3x+4x+12=180 ( sum of angles of triangle = 180 deg.)\r \n" ); document.write( "\n" ); document.write( "8x+12=180 \n" ); document.write( "8x=180-12 \n" ); document.write( "8x=168 \n" ); document.write( "/8 \n" ); document.write( "x=21 \n" ); document.write( "angle I = 21 \n" ); document.write( "Angle II = 63 \n" ); document.write( "Angle III = 96 \n" ); document.write( " |