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 121, Winter 2008, LA Tech
  
 
  
  
  
  
  
  
  
  
  
  
 Cis and trans Geometrical isomers of Cycloalkanes 
  two groups are said to be located cis to each other if they lie on the same side of a plane.
 
If
 they are on opposite sides, their relative position is described as trans.