Home›Browse›friendship graph🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsРусскийالعربية中文EntityQ5504427· pop 7· linked from 18 articlesfriendship graphSign in to saveAlso known as Dutch windmill graph, n-fanplanar undirected graph with 2n+1 vertices and 3n edgesAvailable in 6 languagesEspañolFrançaisDeutschРусскийUkrainianvia Wikidata sitelinks · CC0