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{{Short description|Polyhedral compromise map projection}}
[[File:Projection_AuthaGraph.png|thumb|330x330px|AuthaGraph projection of the Earth]]
'''AuthaGraph''' is an approximately [[Map projection#Equal-area|equal-area]] [[world map]] [[map projection|projection]] invented by Japanese architect [[Hajime Narukawa]]<ref>{{cite web|url=http://ist2010.jp/en/narukawa.html|title=鳴川肇 – Hajime Narukawa|work=ist2010.jp|access-date=7 February 2019|archive-url=https://web.archive.org/web/20161105203434/http://ist2010.jp/en/narukawa.html|archive-date=5 November 2016|url-status=dead}}</ref> in 1999.<ref>{{Cite web|last=Otake|first=Tomoko|date=17 July 2011|title=The world according to AuthaGraph|url=https://www.japantimes.co.jp/life/2011/07/17/general/the-world-according-to-authagraph/|access-date=1 June 2021|website=[[The Japan Times]]}}</ref> The map is made by equally dividing a spherical surface into 96 triangles, transferring it to a [[tetrahedron]] while maintaining area proportions, and unfolding it onto a rectangle: it is a [[polyhedral map projection]]. The map substantially preserves sizes and shapes of all continents and oceans while it reduces distortions of their shapes, as inspired by the [[Dymaxion map]]. The projection does not have some of the major distortions of the [[Mercator projection]], like the expansion of countries in far northern latitudes, and allows for Antarctica to be displayed accurately and in whole.<ref name=":0">{{cite web|url=http://www.authagraph.com/projects/description/【作品解説】記事01/?lang=en|title=AuthaGraph オーサグラフ 世界地図|access-date=7 February 2019|archive-url=https://web.archive.org/web/20181213230718/http://www.authagraph.com/projects/description/%E3%80%90%E4%BD%9C%E5%93%81%E8%A7%A3%E8%AA%AC%E3%80%91%E8%A8%98%E4%BA%8B01/?lang=en|archive-date=13 December 2018|url-status=live}}</ref> Triangular world maps are also possible using the same method. The name is derived from "[[wikt:authalic|authalic]]" and "graph".<ref name=":0" />
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