English

Area of a triangle and angle bisectors

Group Theory 2020-08-26 v1

Abstract

Consider a triangle ABCABC with given lengths la,lb,lcl_a,l_b,l_c of its internal angle bisectors. We prove that in general, it is impossible to construct a square of the same area as ABCABC using a ruler and compass. Moreover, it is impossible to express the area of ABCABC in radicals of la,lb,lcl_a,l_b,l_c.

Cite

@article{arxiv.2005.13431,
  title  = {Area of a triangle and angle bisectors},
  author = {A. A. Buturlakin and S. S. Presnyakov and D. O. Revin and S. A. Savin},
  journal= {arXiv preprint arXiv:2005.13431},
  year   = {2020}
}
R2 v1 2026-06-23T15:51:23.326Z