5: Quasi-archimedean geometry in the thirteenth century,dollar5a supplementary volume comprising the Liber de Mutu of Gerard of Brussels, the Liber philotegni of Jordanus de Nemore together with its longer version known as the Liber de triangulis Iordani, and an appended text of John Dees Inventa circa illam coni recti atque rectanguli sectionem quae ab antiquis mathematicis parabola appellabatur /