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Discussion: Traffic Jam Applet tool
Topic: perpendicular lines
Related Item: http://mathforum.org/mathtools/tool/10/


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Subject:   (no subject)
Author: miclaelB
Date: Dec 11 2003
perpendicular are p and r.
because

p: y=1/5(x-10) lp=1/5
q: y=5(x-10)    lq=5
r: y=-5(x-3/5) lr=-5

lp*lr=-1 (condition)

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