English

Regular polygons

Metric Geometry 2026-04-14 v3

Abstract

The construction of regular polygons with a compass and straightedge is a well-known task and this problem has interested mathematicians for a long time. In particular, for a long time they could not answer the question of whether is it possible to construct a regular 17-gon with a compass and straightedge. C. F. Gauss solved this problem in 1796. He proved later that it is possible to construct with a compass and straightedge the regular polygons with n=2mn1nln=2^m n_1\cdots n_l sides, where n1,,nln_1,\cdots, n_l are different prime numbers of the form   nk=22νk+1\; n_k=2^{2^{\nu_k}}+1. P. Wantzel proved in 1837 that only these regular polygons can be constructed. Essential is here the construction of the regular polygons with nk=22νk+1n_k=2^{2^{\nu_k}}+1 sides. The currently known prime numbers of the form n=22ν+1n=2^{2^{\nu}}+1 are 3,5,17,2573, 5, 17, 257 and 6553765537. In the paper we present a new approach for solving this task. Among other things we analyze in detail the case of n=65537n=65537. J. G. Hermes announced in 1894 that he had a full description of the construction of the 65537-gon. This was the result of 10 years of work, but his text was too extensive and was never published. We show exactly and without gaps how the regular 65537-gon can be constructed.

Cite

@article{arxiv.2505.14865,
  title  = {Regular polygons},
  author = {J. Mainik},
  journal= {arXiv preprint arXiv:2505.14865},
  year   = {2026}
}

Comments

The invariant setts described more accurately. It is pointed out that the solutions of the relevant quadratic equations are real values

R2 v1 2026-07-01T02:26:39.259Z