document.write( "Question 496586: three vertices of a triangles have the cordinates (5,3) (5,-1) and (-1,-1) what are the cordinates of the 4th vertex? \n" ); document.write( "
Algebra.Com's Answer #336497 by stanbon(75887)\"\" \"About 
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Triangles do not have a 4th vertex.
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\n" ); document.write( "Stan H.
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