🌐EnglishEnglishDeutschEspañolFrançaisPortuguêsРусский한국어中文日本語EntityQ367329· pop 9· linked from 75 articlesincidence structurean abstract mathematical object generalizing the properties of points and lines in the Euclidean planeAvailable in 9 languagesEspañolFrançaisDeutschРусскийCroatianHebrewUkrainian한국어via Wikidata sitelinks · CC0Connectionsfamily of setsEntitygraphEntityCategoriesCombinatoricsFamilies of setsFinite geometryIncidence geometry