document.write( "Question 402713: a quadrilateral has angles 70degres , 90degres , 2x and 3x ,what is the value of x?and show me the formula. \n" ); document.write( "
Algebra.Com's Answer #284848 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! The sum of the interior angles in a quadrilateral is 360 degrees. Thus,\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "70 + 90 + 2x + 3x = 360\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "160 + 5x = 360\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 40 \n" ); document.write( " |