Three cases — modern diagram,not manuscript

Depth

At a glance

Three stacked quadrilaterals with base right-angle marks,labelled right,obtuse,acute;legsAD/BC,not the article's lettering. — Dickdock,Saccheri quads.svg,21August2008,public domain;https://commons.wikimedia.org/wiki/File:Saccheri_quads.svg . Original unmodified modern schematic,not Khayyam manuscript. Image legsAD/BC differ from article'sAC/BD convention. · Licence: PD · Open full image

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Sources

Commons: three Saccheri-quadrilateral cases

Cite this page

islam.museum contributors. “Three cases — modern diagram,not manuscript”. islam.museum, https://islam.museum/en/media/khayyam-quadrilateral-context/. CC BY-SA 4.0. Last updated 2026-11-06.

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