document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1037163>Question 1037163</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the sum of measures of angles of a convex quadrilateral?<BR>\n" );
document.write( "will this property hold if the quadrilateral is not convex? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #651889 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=651889\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sum of the measures of the interior angles of any quadrilateral is 360.<BR>\n" );
document.write( "Take any quadrilateral, convex or non, draw a line through it to break it into 2 triangles. Then the laws of triangles applies:<BR>\n" );
document.write( "\"the sum of the interior angles of ANY triangle is 180 degrees\"<BR>\n" );
document.write( "Since you split the quadrilateral into 2 triangles and each triangle is 180 degrees, 2*180 = 360<BR>\n" );
document.write( "Attached is a picture for you to print and practice how you would draw a line to split a convex and a non-convex quadrilateral into two triangles:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=addingup&illustration_name=tmp_29184_pict06C.GIF_547190173.gif\"> </SPAN>\n" );
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