The first Morley adjunct triangle is the triangle first Morley triangle . Unlike the first Morley triangle , the first Morley adjunct triangle is not equilateral.
The first Morley adjunct triangle has trilinear vertex matrix
(Kimberling 1998, p. 167).
The first Fermat point of the first Morley adjunct triangle is the first Morley center
See also First Morley Triangle ,
Second Morley Adjunct Triangle ,
Third Morley Adjunct Triangle Explore with Wolfram|Alpha References Kimberling, C. "Triangle Centers and Central Triangles." Congr. Numer. 129 , 1-295, 1998. Referenced on Wolfram|Alpha First Morley Adjunct Triangle Cite this as: Weisstein, Eric W. "First Morley Adjunct Triangle." From MathWorld https://mathworld.wolfram.com/FirstMorleyAdjunctTriangle.html
Subject classifications 
illustrated above, where 
is the first Morley triangle. Unlike the first Morley triangle, the first Morley adjunct triangle is not equilateral. ![[2 sec(1/3C) sec(1/3B); sec(1/3C) 2 sec(1/3A); sec(1/3B) sec(1/3A) 2]](https://mathworld.wolfram.com/images/equations/FirstMorleyAdjunctTriangle/NumberedEquation1.svg)
. 