document.write( "Question 1031755: A NONAGON HAS INTERIOR ANGLES OF 147°,146°&193° CALCULATE THE MAGNITUDE OF EACH UNKNOWN INTERIOR ANGELS GIVEN THAT THEY ARE EQUAL \n" ); document.write( "
Algebra.Com's Answer #646538 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! The total number of degrees in a nine-sided nonagon is found by \n" ); document.write( "180(n-2) = 180(9-2) = 180(7) = 1260 degrees \n" ); document.write( "Since three angles are spoken for already, and they total 147+146+193 = 486, there must be 1260 - 486 = 774 degrees left for the other six angles. \n" ); document.write( "Divide that by six and get \n" ); document.write( "774/6 = 129 degrees each. \n" ); document.write( " |