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Re:Pentagon Tiling Proof Solves Century-Old Math Problem by v64 on Tuesday July 11, 2017 @08:20PM (#14749205)
Here's [1] an article from 2015 describing Casey Mann, Jennifer McLoud, and David Von Derau's discovery of the 15th type of pentagon.

[1] https://www.theguardian.com/science/alexs-adventures-in-numb...

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