document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1197251>Question 1197251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the interior angles of the triangle whose vertices are (-3,3), (-1,-1), (3,-3) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #830460 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=830460\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the interior angles of the triangle whose vertices are A(-3,3), B(-1,-1), C(3,-3)<BR>\n" );
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document.write( "The slope of BC is zero (0).<BR>\n" );
document.write( "The slope of AB is -4/2 = -2<BR>\n" );
document.write( "The slope of AC is 6/-6 = -1<BR>\n" );
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document.write( "atan(-1) = 135 degs with the x-axis ---> interior angle of 45 degs at point C.<BR>\n" );
document.write( "atan(-2) = ~ -63.435 degs --> interior angle of 116.565 degs<BR>\n" );
document.write( "The 3rd angle = 180 - the sum of the other 2.<BR>\n" );
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