<prompt> Mac Ewans triangle is also known as?Supratemporal triangleSuprameatal triangleSupramastoid triangleSupratympanic triangle  <response>: Ans. is b i.e., Suprameatal triangle MacEwens triangle or suprameatal triangle. It is bounded above by supramastoid crest, anteroinferiorly by posterosuperior margin of external auditory canal and posteriorly by a tangent drawn from zygomatic arch. 