document.write( "Question 1048426: Determine whether the three points are the vertices of a right triangle
\n" ); document.write( "a) (6,-6), (9,-6),(9,1)
\n" ); document.write( "b) (7,0), (13,2), (12,-3)\r
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Algebra.Com's Answer #664018 by Alan3354(69443)\"\" \"About 
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Determine whether the three points are the vertices of a right triangle
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\n" ); document.write( "You can find the lengths, then check using Pythagoras.
\n" ); document.write( "It's less work to find the 3 slopes of the lines, tho.
\n" ); document.write( "a) (6,-6), (9,-6),(9,1)
\n" ); document.write( "b) (7,0), (13,2), (12,-3)
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