Apollonius, of Perga, Eutocius, of Ascalon, Pappus, of Alexandria, Commandino, Federico, 1509-1575, Serenus, Antinoensis, Burndy Library, donor. DSI · Bononiæ : Ex Officina Alexandri Benatii · leaf 21
re illud, ejuod propofitum efl. iungatura b: & ad partes b produca- tur : & fiat ut d ad c,ita c ad aliam lineam,qus maior erit, quam d: fitautem e d.rur fus fiat ut e ad a b,itad ad.b f,& c ad g. patet igitur lineam c proportionalem effe in- iodi: ' A ter d & edritemq; g proportionalem in ter a… … dratum f h,itaah ad b 1. Rurfus quo- ■L niam angulus b h f squalis efi angulo h ab: & angulus a h b angulo h b 1 squalis, co- ap.pnmi. alterni eriiiri liint: & reliquus reliquo squalis erit: & triangulum a h b fimile trian- gulo b h 1.quare latera,qus circum squales angulos, proportionalia funt:…
Mathematics, Greek · Conic sections · Mathematics
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-107-11.webp)
