document.write( "Question 1061425: The coordinates of the vertices of triangle ABC are A(-1,3), B(1,2) and C(-3,-1).\r
\n" ); document.write( "\n" ); document.write( "Determine the slope of each side of the triangle and use that information to determine if the triangle is a right triangle or not.
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Algebra.Com's Answer #677971 by Fombitz(32388)\"\" \"About 
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\"m%5B1%5D=%282-3%29%2F%281-%28-1%29%29=-1%2F2\"
\n" ); document.write( "\"m%5B2%5D=%28-1-2%29%2F%28-3-1%29=-3%2F%28-4%29=3%2F4\"
\n" ); document.write( "\"m%5B3%5D=%283-%28-1%29%29%2F%28-1-%28-3%29%29=4%2F2=2\"
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\n" ); document.write( "Since \"m%5B1%5D%2Am%5B3%5D=%28-1%2F2%29%282%29=-1\", two lines are perpendicular so it is a right triangle.
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