English

On the Morley's triangle

History and Overview 2022-08-29 v1

Abstract

We give a complete investigation of Morley's trisector theorem. If the intersections of the half lines starting from the adjacent vertices of a triangle form an equilateral triangle for an arbitrary triangle, then the half lines are the angle trisectors. To derive the result we use elementary trigonometry, Taylor series expansions, and solve systems of polynomial equations step by step. As a byproduct we get a probably new trigonometric identity.

Keywords

Cite

@article{arxiv.2208.12742,
  title  = {On the Morley's triangle},
  author = {V. E. Sándor Szabó},
  journal= {arXiv preprint arXiv:2208.12742},
  year   = {2022}
}

Comments

16 pages, 2 figures

R2 v1 2026-06-25T02:00:42.383Z