Mathematics Magazine: Volume 47, Number 1, Pages: 15-22
K. R. S. Sastry
First Paragraph: Morley's theorem is that the adjacent internal trisectors
of the angles of a triangle intersect forming an equilateral triangle.
This triangle is now called Morley's triangle. Let us name it Morley's
triangle i (Morley delta i) as its vertices lie within the mother triangle.
A proof of this theorem has appeared in this Magazine by G. L. Neidhardt
and V. Milenkovic . Analogously, W. R. Spickerman  has shown that
the adjacent external trisectors of the angles of a triangle also intersect
to form an equilateral triangle. Let us name it Morley's triangle e (Morley
delta e) as its vertices are outside the mother triangle.
Reviewer: jascha swisher