[FOM] The Steiner-Lehmus theorem (charlie)

Andreas R Blass 1 ablass at umich.edu
Sun Aug 21 17:07:30 EDT 2011

The use of superposition (or application) in step 5 ofthe alleged  
proof seems to be faulty.  The same argument would show that, whenever  
the corresponding sides of two parallelograms are congruent, then the  
parallelograms themselves are congruent.

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