document.write( "Question 925040: In triangle abc, the measure of angle b is ten more than angle a and an exterior angle at vertex c measures 120. What is angle a? \n" ); document.write( "
Algebra.Com's Answer #561278 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! In triangle abc, the measure of angle b is ten more than angle a and an exterior angle at vertex c measures 120. What is angle a? \n" ); document.write( "------------------------ \n" ); document.write( "The interior angle at \"c\" = 180-120 = 60 degrees \n" ); document.write( "Let angle \"a\" be \"x\" \n" ); document.write( "Then angle \"b\" is \"x+10\" \n" ); document.write( "----- \n" ); document.write( "Equation:: \n" ); document.write( "x + x+10 + 60 = 180 \n" ); document.write( "2x = 110 \n" ); document.write( "x = 55 degrees (measure of angle \"a\" \n" ); document.write( "x + 10 = 65 degrees (measure of angle \"b\" \n" ); document.write( "--------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "--------------------- \n" ); document.write( " |