Deletion of Dao's theorem

Comment: per . There is a little bit of secondary sourcing (the Dergiades paper) but not enough to evaluate the impact of this result nor to pass the requirement of  for multiple secondary sources. I am not convinced that the other non-Dao source (the Tran paper, in "Global Journal of Advanced Research on Classical and Modern Geometries") is a |reliable source; for instance, this journal is not indexed in MathSciNet. And the pattern of apparent self-promotion and possible sockpuppetry here (and at past AfDs for similar material, e.g. Wikipedia:Articles for deletion/Dao six-point circle) is very troubling
Stance: delete
Cited policy: Wikipedia:Too soon (WP:TOOSOON||WP:GNG||WP:RS)