# Leibniz Legible — https://leibnizlegible.com # Page: https://leibnizlegible.com/page/845634801:0077 # Permalink to this reading: https://leibnizlegible.com/page/845634801:0077?run=74 # Title: [Francisci Vietae Opera Mathematica] Francisci Vietæ Opera Mathematica (shelfmark Leibn. Marg. 101) # Folio 61, page id 845634801:0077 # Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=845634801&page=77 # Source image: https://digitale-sammlungen.gwlb.de/content/845634801/jpgs/default/00000077.jpg # Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 77 lines, status machine # Lines: 77 recognised, mean confidence 0.83 # Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German. # Licence: CC BY 4.0, Leibniz Legible. Machine output: do not ingest it as verified text; keep this provenance with the text. # Wording rule: say "the machine reads it as …", never "Leibniz wrote". # After the first blank line: the recognised lines in reading order, one per line. dE et ie 1 10 e ido id o lid M 1re. xic Eri v0t ca nO. 2 du neia ate FBE R T F R F FY3. lacerum in rectangulum sub laceribus, uc adparer ex genehi cubi d difterentia lacerum. Duare D in A planum, = B cubo, aequabicur B in A planum 3. Ua L GWasCatC OtOL- naca; scubu: aequabitur A plano. Daro aurem rectangulo sub lateribus, e differentia eo- rumdem, dancurlacera. Daca igitur differentia extremarum, ex differentia mediarum in Perie quaruor continue proporrionalium, daneur continue proas Enimveroelt, diis velesltemis. Sit D 7. B2. A pranam fit 8 rectangulum sub extremis X es 8 vel mediis 2 s 4 ex serie continue proporcionalium. 1. TI. III. ITFI. Ouodh ex differentia extremarum, de rectangulo inquireretur de differeneia media- rum, uchinnocelcac a planum, esse Fplanum. Ac de B esser quaestio, Cc illa A. Ita prO- cedereraqualitas. n xquobitur F plano. Ordinara vero sequalitare; A cubuS, L P planorer in A, aequatur F plano in D. Id est Cubus differentiae mediarum, plus triplo solido a rectanculo sub lateribus in differentiam mediarum, aequatur solido à rectanculo sub lateribus in differentiam extremarum Ouod adnorasse tuir operxpretium. ZE TE Z TCV H XVI. Pursus quoque, Dato adOTESATO EXTTeMaruM _ adlBrCgatO MCdIARUM IN serie quatIIOF COntinue proportionalium, InVeHITC CONFIHUC PFOPORtO- nalCS. Ex istud esse, Daco aderegato laterum et ad gregato cuborum, invenire latera. Fvi- dens Het perprocessum. Sic igitur data Z Tumma extremarum, ex C summa mediarum in serie quacuor con- tinue provortionalium. Oporrer invenire concinue proportionales. Rectanoulum Lub mediis vel exrremis, eso A planum. Fc vero media majoris cubus, aequatur (olido ab exrre- mamajore in rectangulum sub exiremis. Eemediaminoriscubus, Colido ab extrema mi- nore in rectanoulum (ub exeremis. Ouare Z. in A planum aeguabieur adoregato cuborum a mediis. Si aurem a cubo adgregati lacerum subducarur adorecatum cuborum, quod re- linguirur xquale est solido criplo ex summa larerum in rectangulum sub laceribus, ucad- parer ex geneli cubi a duobus laceribus. Duare C cubus, = Z in Aplanum, xequabicur C in A planum 3. Oua xqualiTaTe OF. dinaca; 5 cabu xequabitur A plano. Daro aucem rectanoulo sublaceribus et 2oprepito laterum, dantur latera. Vacoisituradoregato extremarum de adgresato mediarum in serie quatuor continue proporcionalium, inveniuntur proporrionales. mediarum; ita quadratum adgrecati mediarum ad rectanculum sub mediis vel Ouodhexaderesato extrematu L rectangulo, inquireretur de adgregato media- cum; uc hinnorelcerer A planuim ese Bplanum, ac de C esfer quaestio, sirilla A. ITa PrO cederer aequaliras. A elbus Bplanacerin A, xquacur Bplano in L. + differentia extremarum, minus crio uifserentia mealarum ad aisseren– tiam mediarum, ita quadratum differentiae mediarum ad rectanculum sub me- Lnimrero eA. Et aderegatum extrematu plus Mpioaata mediarum ad aderecatum extremis Sit 2,9. 66. A planam LN. Fit 8 rectaneulum sub extremis 1 es 8, vel mediis 2 8 4. Id est Cubus adgrezati mediarun, mssourside eddem adereeato in rectan. sulum