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# Title: [Problema Austriacum Plus Ultra Quadratura Circuli] Problema Avstriacvm Plvs Vltra Qvadratvra Circvli (shelfmark Leibn. Marg. 230, Stück 1)
# Folio 784, page id 1815201908:0841
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1815201908&page=841
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YCTVS PLRKI
tAOPOSITIO CXZI.
784
Dolcis ipdem vefgura ostenu, c VD parabola, e BB, C C linex
recta, deinde B ductum in alcirudinem B C a quale sic AB ducto
In BF.
Dico magnicudinem orram ex ductu D A in B C alticudinem ae qua-
ri AB ductoin C F.
t
Demonottatioo
ALIa TUNE eX
 Pochel Corpo
ra Orta ex DB in BC
_ ex AB in BF: sed
DB duccum BC a
AL guaEuE D A in BC, 8
AB in BC; Similicer
AB duccum in BF. X-
Gulatur AB in BC, 8
AB in C R. IBICUFD A
In BC, vna cum AB in
laco isitut communi AB in
BC, aequalc est A)
BC. maneF D A in BC aacldinem. xquale AB CL.
PROPOSITIO CXXII
POE OrcO ex auCIaCC. IM VB.
Demonstratio.
irculum ABI2.
sgane parallela
F C, FC quaS SCCCHE
FL. lupponatur auc
CD ductumi
1DD
aequalc FD duuo
Dico eriam FB
DD.
lince C C, 
IHDF.
ductum in alcicudi-
REME D Equari COF.
Lacum CD duccum in DB, aequale est CF. ducto in DB; vna cum F D du-
ccom DB. Remplanum E. D duecum in D F aeguatu E D ducco in DB, vra
cum