Tehničko veleučilište u Zagrebu · Zagreb

On Fuss’ relations for bicentric polygons with an odd number of vertices

neobjavljeni prilog sa skupa

neobjavljeni prilog sa skupa

On Fuss’ relations for bicentric polygons with an odd number of vertices

Vrsta prilog sa skupa (neobjavljen)
Tip neobjavljeni prilog sa skupa
Godina 2025
Status neobjavljeno

Sažetak

Here we describe a general analytical derivation of Fuss' relation for bicentric polygons with an odd number of vertices ($n$-gons where $n geq 3$ is an odd integer). The bicentric $n$-gon is polygon with $n$ sides that are tangential for incircle and chordal for circumcircle. The connection between the radius $(R)$ of circumcirle, radius $(r)$ of incircle and distance $(d)$ of their centers represents the Fuss' relation for the certain bicentric $n$-gon. A bicentric polygon whose sides describe the inscribed circle $k$ times is called a $k$-bicentric polygon. For $k=1$ a 1-bicentric $n$-gon is simply called a bicentric $n$-gon. The relation $F_n^{(k)}left(R,r,dright)=0$ is the Fuss' relation for a $k$-bicentric $n$-gon. To date, Fuss' relations are known for bicentric $n$-gons where $n=3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,20$. We present the results we obtained for the bicentric tridecagon and the pentadecagon published in the paper - M. Orlć Bachler, Z. Kaliman: Fuss' relation for bicentric tridecagon and bicentric pentadecagon, Math. Panonica, 162-170 (2024), and the new results for the bicentric septadecagon. All results were obtained using the program Wolfram Mathematica.

Ključne riječi

bicentric polygons, tridecagon, pentadecagon, septadecagon, Fuss' relation