document.write( "Question 827410: Okay so im VERY confused here.. So each angle of a quadrilateral are y+11, y-4 , y+13 and just Y they are the four angles on each corner of this quadrillateral i dont understand how too fiqure out each angle. Can you please help me out? \n" ); document.write( "
Algebra.Com's Answer #498691 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
A quadrilateral is a polygon with 4 sides.
\n" ); document.write( "For a polygon with \"n\" sides, the measures of the \"n\" angles add up to \"%28n-2%29%2A180%5Eo\" .
\n" ); document.write( "The measures of the 3 angles of a triangle add up to \"180%5Eo\" .
\n" ); document.write( "The measures of the 4 angles of a quadrilateral add up to \"2%2A180%5Eo=360%5Eo\" .
\n" ); document.write( "The measures of the 5 angles of a pentagon add up to \"3%2A180%5Eo=540%5Eo\" .
\n" ); document.write( "For your quadrilateral, the measures of the angles (in degrees) are
\n" ); document.write( "\"y%2B11\" , \"y-4\" , \"y%2B13\" , and \"y\" .
\n" ); document.write( "If you add them all up, it should equal \"360\" .
\n" ); document.write( "\"%28y%2B11%29%2B%28y-4%29%2B%28y%2B13%29%2By=360\"
\n" ); document.write( "\"y%2B11%2By-4%2By%2B13%2By=360\"
\n" ); document.write( "\"y%2By%2By%2By%2B11-4%2B13=360\"
\n" ); document.write( "\"%28y%2By%2By%2By%29%2B%2811-4%2B13%29=360\"
\n" ); document.write( "\"4y%2B20=360\"
\n" ); document.write( "\"4y=360-20\"
\n" ); document.write( "\"4y=340\"
\n" ); document.write( "\"y=340%2F4\"
\n" ); document.write( "\"highlight%28y=85%29\"
\n" ); document.write( "So the measure of one of the angles in your quadrilateral is \"85%5Eo\" .
\n" ); document.write( "
\n" ); document.write( "The measures (in degrees) of the other 3 angles are
\n" ); document.write( "\"y%2B11=85%2B11=highlight%2896%29\" ,
\n" ); document.write( "\"y-4=85-4=highlight%2881%29\" , and
\n" ); document.write( "\"y%2B13=85%2B13=highlight%2898%29\" .
\n" ); document.write( "
\n" );