GeoDom

  The following is an extension of the  law of sines for cyclic quadrilaterals that comes to accompany the  generalization of Mollweide...

Several interesting proofs of angle sum identity are given on  MathSE . In this note, I will provide another proof that is possible because,...

Hace dos semanas, recibí una invitación para dar un breve discurso a estudiantes de secundaria acerca de mis más recientes descubrimientos e...

 Let me tell you about an exciting discovery I made while exploring the theoretical importance of half-angle formulas in trigonometry. These...

  The following problem is a generalization of my previous problem conjectured by Van Khea. We will give a proof. The following problem is ...

 The following theorem is a property of the  circumcircle mid-arc triangle which appears to be unknown. We will be using standard notation:...

Problem . Let $ABC$ be a triangle. Let $A'$ be on $BC$ such that $AA'$ is an internal angle bisector. Call $M$ the midpoint of $AA...