document.write( "Question 294386: One angle of a triangle is 20 degrees. The second angle's measurement is four times the third. What is the measure of the third angle? \n" ); document.write( "
Algebra.Com's Answer #212276 by nerdybill(7384) You can put this solution on YOUR website! One angle of a triangle is 20 degrees. The second angle's measurement is four times the third. What is the measure of the third angle? \n" ); document.write( ". \n" ); document.write( "Sum of the interior angles of any triangle is 180 degrees. \n" ); document.write( ". \n" ); document.write( "Let x = measure of third angle \n" ); document.write( "and 4x = measure of second angle \n" ); document.write( "then \n" ); document.write( "20 + 4x + x = 180 \n" ); document.write( "20 + 5x = 180 \n" ); document.write( "5x = 160 \n" ); document.write( "x = 32 degrees (third angle)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |