document.write( "Question 1035147: decide whether the points are vertices of a right triangle..(1,2), (3,0), (3,3) \n" ); document.write( "
Algebra.Com's Answer #649771 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
To do this you need to find the slopes of the lines connecting these points.
\n" ); document.write( "Call the points #1, #2, and #3.
\n" ); document.write( "The slope of #1 & #2 is (0-2)/(3-1) = -1
\n" ); document.write( "The slope of #2 & #3 is (3-0)/(3-3) = infinity ==> vertical line
\n" ); document.write( "The slope of #3 & #1 is (2-3)/(1-3) = 1/2
\n" ); document.write( "None of these slopes is the negative reciprocal of another.
\n" ); document.write( "Therefore this is not a right triangle.
\n" ); document.write( "
\n" );