Christophori Clavii Bambergensis ex Societate Jesu : in sphaeram Joannis de Sacro Bosco commentarius (1602)
Clavius, Christoph, 1538-1612, Sacro Bosco, Joannes de, fl. 1230, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · Lugduni : Sumptibus Joannis de Gabiano · leaf 109
iametro,& dimidiata ciratmferentia ctrculi. E x t o circulus A B C, cuius fernidiameter D B: RecTanguIum autemD B E F, comprehenfum fub D B , femidiametro circuli, & B £ , refta,quaea*qualis fit dimidiata: circumferentia? circuli. Dico aream circuli A B C, ^qua-lem efie reftangulo D B E F.… … turque E G,a?qualis ipfi B E,vt fit B G, re£ta a?qualis toti circumferetia? circuli.Coniunganturdeniquepun&a D,G,re&a D G. Quoniamigitur (per i.propof.Archimedis de Dimenfione circuli)circulus A B C.a^qualis eft triangulo DBG:Eftautemtriangulum D B G,reftangulo DB EF,a?quale,vtinfcholio…
Astronomy
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