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# Title: [Problema Austriacum Plus Ultra Quadratura Circuli] Problema Avstriacvm Plvs Vltra Qvadratvra Circvli (shelfmark Leibn. Marg. 230, Stück 1)
# Folio 178, page id 1815201908:0235
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eCTREVEVS.
Demonstratio
B3. cerris. Ca F Cperpendicularis ad L. D: igicur HC CB xequales sunc; octendimus 2y.
+. hnim. Dem P. FB CBD quoque xquales estC ;IBITUT FE, FD aequales lunc. Quod tuic de.
monstrandum.
eR OPOSITIO XVI.
ard sereii.
Oncinent recta E D, circulum A BC in B, ericibitur B F normalis = ipSi F.D.
onde cumlinex BE, BD, per praecedencem aequales sinc, cruncetiam aequales
F L F D:
tam vero E. D, circulum AB C secec in puncto quodam H: ducatuFGUC CX P re.
vet L C triangulilaceribus, Ccomema Cccorua comi
cucatine, ee ex C recta edua CD; Cutex B velcue Mats  paralle.
laponacur BF, occurrens circulo AFIB in F:
LDicOFD, B L, asscats e Cas
1p0t  Ct et 1 2d31
llicu. Demonstralto
hunor a. u tagunin i
Teprimo verrex eriansuli in perimeero circuli A B C consticurus; linea vero DC
lcestra criangulum ABC: Ponacur iuneta BD aequidistans AF, OcCurreNS
ex C BIM L; IuI anSO BDC, aequalis cA ARC, scd _ BD C aeu
eGuacut aligolus sepena AB C, ipicur punctum F, communis est incerlectio cir.
eati ABC a Hoc CD e gdia segmenca circulorum AB C, B D C similia sau
oporeun demontrale.
cric angulus AFB aequalis s Gu se, LC Cometur, isicur de put.
etum LCommunis est incerlectio circuli AHIB, _ recte BF: Cum totur patanelo.
grammum sic BF P. D, manifectum est F. D, BF. lincas incer se xquales essc. Ouod
ACCHO
 stis u s  s s  oBs  etet et u si te u   t et es s   e es e      e 1 et t ut  e    1