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   | Two coplanar lines | 2007-08-21 |  
  |  | Robin pose la question : I am going two show that the two lines are coplanar:
 
 (x-5)/4=(y-7)/4=-(z+3)/5
 (x-8)/7=y-4=(z-5)/3
 
 I know I have to find a point that lie on both lines, but dont really get it.
 Stephen La Rocque and Penny Nom lui répond.
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