orem peripheriam in pun&o £, &trarifietis per puncla BD5 exit centrum huiusperipheric G vertex trianguli, cuius latus AGequatur hteri B G,&c data? differentia? A C. Atquehic modus priorem in hoc fupcrare vdctur,quod illic omnia fieriintclliguntur in loco folido,hic autem in codem loco… … CX I 3 C A P V T. 6z Arithmetic a Capvt XXIIL Triangulum irvvenire, cuim area (ft numtrimfit e& emus)<#quctur Perimetro. LIneam fupcrficiei aequari poffe nemo vnquam probabit: cum finthete-rogenea? magnitudines, inter quas nulla eflc poteft vel arqualitas vel ra-tio. vcruntamen,li…
Internet Archive · Public Domain Mark 1.0. 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-81-10.webp)
