. Divers ouvrages . icec BD média propor-tionalis inter diamctri por-tioncs AD , DC; undc ipfacircumferentia, rursùs aliorcfpeftu locus crit, quippead médias Geometrica hujus loci talis c/let, Reftâ II-neâ utcunque tcrminatâ, fi inter termines illius fumaturquodvis punâ:um, à quô educatiir ad redos angulos ip-fi rcda; qua:vis alia refta, qux inter prioris rcdce por-tiones média proportionalis exiftat, crit alterum cdud;^extremum ad circuli circumfercntiam. In tertio exempla. Efto adhuc quxvis circumferentiacirculi ABC, atquc in ca rc-£la qua:dam AC qua; fubten-dat arcum
. Divers ouvrages . icec BD média propor-tionalis inter diamctri por-tioncs AD , DC; undc ipfacircumferentia, rursùs aliorcfpeftu locus crit, quippead médias Geometrica hujus loci talis c/let, Reftâ II-neâ utcunque tcrminatâ, fi inter termines illius fumaturquodvis punâ:um, à quô educatiir ad redos angulos ip-fi rcda; qua:vis alia refta, qux inter prioris rcdce por-tiones média proportionalis exiftat, crit alterum cdud;^extremum ad circuli circumfercntiam. In tertio exempla. Efto adhuc quxvis circumferentiacirculi ABC, atquc in ca rc-£la qua:dam AC qua; fubten-dat arcum ABC utcunque jatque in eo arcu , fumptoquovis pundo B, ducantutTcâx BA, BC ad cjufdem ar-cus fivc chorda: ipfius cxtre-ma ; manifellum cù. angulumABC a;qualem efle omni aliiangulo qui in cadem portioneABCexiftet, Manifeftum eftquoque potuifTe fuper rcdamAC conftitui portioncm circuli ABC, qux cujufcun-que anguli ABC capax eflet ; unde circuli portio ABChoc rcfpcdu locus erit ; quippe ad angulos De Resolutione ^£ q,uat i onu m. 139Phrafis Gcometrica hxc cric. Re£lâ lineâ utcunqueterminatâ -, &: expofito qiiovis angulo rcâ:ilineo : fi àre£ba: liiiex terminis ad aliquod pundum inclincnturdux alia: rcclar qux angulum expofito xqualem coati-néant : erit hoc pundum, five vertex anguli, ad alicu-jus portionis circuli circumferentiam. In quarto excmplo. Efto ut fupià quivis circulus eu-jus diameter AB; atque ex pundis A, B , ducantiir adquodvis pundum C in circumferentia exiftens , rcda;AC, BC, Patcc crgo ambo fimul quadrata AC, BC
Size: 1674px × 1492px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1600, bookdecade1690, bookpublish, booksubjectgeometry
