Home›1 (number)›tau🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiSvenskaTürkçeРусский한국어中文日本語EntityQ2333151· pop 13· linked from 45 articlestauAlso known as τ, 2π, 2pi, two piratio of the circumference of a circle to its radiusWikidata factsImageTau-angles.svgShow 3 more factsCommons categoryTaunumeric value6.283185307179586476925286766559005768394338798750211641949889184615632812572417997256069650684234136TeX string\tauvia Wikidata · CC0Available in 12 languagesEspañol中文日本語РусскийArmenianBanglaBasqueFinnishNederlandsPolskisimpleConnectionsPlanck constantEntityroot of unityEntityCategories1 (number)AngleMathematical conceptsPiUnits of plane angle