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# Title: Qua Continentur De Angulo Contactus & Semicirculi, Disquisitio Geometrica. De Sectionibus Conicis Tractatus. Arithmetica Infinitorum: sive de Curvilineorum quadraturâ, &c. Eclipseos Solaris Observatio (shelfmark Leibn. Marg. 84:2)
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Arithmetica insinitorum.
Nam A circuli R adi-
US DONaTUr R, C cujus
Dars intinice parra
∞ =-49) eique inlictane
Perpendiculares sive (i-
nus rectinumero intini
ei Ouadrancem circuli
complences; crunc ilIX
: a
perpendiculares media proportionales inter Diametri Segmen-
ea Cucnorum cA;) hocck.
Inter R + O, R + F2, R + 22, R + 3a9 &C,
 R O, R = 12, R m 22, R = 32, BC.
quortRc. 
ctangula,
Ipl29;7
E O0, R - 12, R g R =9a _C.
media CY: R -00. V: R = 12 V: R = m 422 V: R 922, _C.
PFODOF. 
cionales
enam isicur racionem habene harum radicum univertalium
Rgoregacum, ad coridem maximae (Radio Ccil.) agualiuni, eam
habet quadrans circuli (ex illis constans) ad quadracum Radir
conttans exhi:) Adeoque _ circulus inceger ad quadracum
Diameeri. Ouod erac octendendum.
Acque idtem de qualibec ellipsiCmucaris mucandis) Facile osten-
derur; cum iplius eciam ordinacim applicaex sine mediis pro-
Porcionalibu Cincer diamerricralverlae (egmenca) proporcion
nales, d quidem nonnunquam aequales, uc ex conicorum do-
etrina nocum cA.
SCHOLTVM.
Racio aurem quam innuic haecproposicio ccirculi nempe ad
quadracum Diameeri) en cR, quam habet llnicas ad nemerum
incermedium incer T _ Z in sccunda serie Franlverta T’abella
PrOP 227. Ouomodo aurem inveniecur numerus ille (vel aliis
quiris iltius seciei numeris incerponendus) deincexs inquiren-
dum eric.
PFOD. 121