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)\"\" \"About 
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( "
\n" );