On regular graph,thathas two types of facesthat havingtwo consecutive numbers of edges

Main Article Content

Wafiq Hibi

Abstract

It is known that any three - Regulargraph, planar and connected, and all the faces in it are
pentagonal or hexagonal, thenthe number of pentagons in it is double the number of hexagonal
edges, i.e. 12. [6].
The purpose of this paper is to prove the following:
Given ans-regular graph,planar and connected, and all the faces in it contain only (l)or
(l+1)edges, also

Article Details

Section
Articles