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# Title: [Francisci Vietae Opera Mathematica] Francisci Vietæ Opera Mathematica (shelfmark Leibn. Marg. 101)
# Folio 284, page id 845634801:0290
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=845634801&page=290
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 31 lines, status machine
# Lines: 31 recognised, mean confidence 0.90
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Boni e octogoni. Ouare secerur circulus BDCF quadritariam à duabus rectis BC, 
Tele ideo normalirer se cantibus in centro, eE sumacuE DF latus hexagont, a ploul
DF, AB conveniane in C. Sumatur quoque larus octogoni DK, cuiprodncto ipla A
Occurrat in L. Jam aurem invenrum lc lacus hepragoni quod quaerieur, contensin.
TEFDK, DF, _E GFDM, quod productum intercipiaFGL in NI. Dico MechaMCHSLCc
L. N, NC eNC aequales. Leaque in syncheH datam GL. (prOprex daTAS DR, DF) (ec aDBbI
Fariam in N, dc ducta ND secance circulum in M, extribuero DM ut lacus Heprasoni.
264
Latus enneasoni circulo inseribendi invenire.
Sub A cenrro incervallo quocumque AB describatur circulus. Oporreclatus ennea
num consiltic aquidictans ab iispari angulorum numero. Danrur aurem coode la
tera e octogoni _ decasoni. Quare secetur circulus BDC F. quadritariam a duabus dia
metris BC, DE. Cescideo normalirer secantibus in cenErO, dE lUIAEUIE DK laruS OCtO5O.
ni. e producte DK, AB conveniane in L. Sumatur quoque lacus decagoniDO. cur pro-
ducto ip(a ABOCCICACMIF. Jam AUCEH LHVEMCMI HE TaEUS enMeAGONI quod queTEI
soniei circulo in scribendiinvenire. Ac veroincer octogonum de decagonum enncaso
conlittensitrer DO, DH ClF DO. quod productam intercipiat LP in R. DicoPR, LL
ee aequales. laque generale ese in omnibus laceribus polysonorum, ue cum ab D limicu
sumentur lacera duocum polygonorum aequidistantium pari angulorum Dumeto à Po
8ono de cujus latere quaericur et desinent producta in linea AB, pars linex AB ab iis M
incercepra secabitur bitariam à lacere de quo quaericur ad eamproducto. Ieaque in syt
cheli daram L P proprer darasDO, DK secabo bitariam in R, e ducta DR Secance ct
culum in O. exhibuero D Ouclacus enneasoni, et eandem mechodum in reliquislata
Placearramen quam ea merhodus aberrer d vero expendere. Id per CanoncM Mache
maricum accebit. Coulachim AC linucoro, latera AB, AC, AI, d L, a13
AR, hunc prolinus, numerive Caecundi angulorum qui ad D in criangulis eclaBB
BDA, CDA. IO LB IOR OOCouNE. Anguli aurem illI CAMEHE P
prec dacas ab sumpras ex dimidio circuli ambitu DE circum terentias. Itaque da bunta
quoque protinus ipli, acque adeo prosinuum differentix.
ribus constanter obserravero.
Ersi vero non demonstranri vel paralosistice demonstranti sides adhibenda non eta