document.write( "Question 34309: Geometry: Floor plans for a building have the four corners of a room located at the points (2,3), (11,6), (-3,18), and (8,21). Determine whether the side through the points (2,3) and (11,6) is perpendicular ot the side through the points (2,3) and (-3,18). \n" ); document.write( "
Algebra.Com's Answer #20574 by venugopalramana(3286)\"\" \"About 
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Geometry: Floor plans for a building have the four corners of a room located at the points (2,3)...A
\n" ); document.write( ", (11,6)....B
\n" ); document.write( ", (-3,18)....C
\n" ); document.write( ", and (8,21)...D
\n" ); document.write( ". Determine whether the side through the points (2,3)....A
\n" ); document.write( " and (11,6).....B
\n" ); document.write( " is perpendicular ot the side through the points (2,3).....A
\n" ); document.write( " and (-3,18)...........C.
\n" ); document.write( "SLOPE OF AB = (6-3)/(11-2)=3/9=1/3
\n" ); document.write( "SLOPE OF AC = (18-3)/(-3-2)=15/-5=-3
\n" ); document.write( "PRODUCT OF SLOPES OF AB AND AC =(1/3)(-3)=-1....
\n" ); document.write( "HENCE THE 2 LINES ARE PERPENDICULAR.
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