document.write( "Question 236198: Four angles of a pentagon have measures 30, 60, 120, and 165. Find the measure of the fifth angle. \n" ); document.write( "
Algebra.Com's Answer #173889 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Four angles of a pentagon have measures 30, 60, 120, and 165. Find the measure of the fifth angle. \n" ); document.write( "----------- \n" ); document.write( "The sum of the angles of any polygon with n sides is \n" ); document.write( "180*(n-2) \n" ); document.write( "A pentagon has 5 sides. 180*(3) = 540º \n" ); document.write( "30 + 60 + 120 + 165 = 385º \n" ); document.write( "The 5th angle is 540 - 385 \n" ); document.write( "= 155º\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |