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# Title: [Problema Austriacum Plus Ultra Quadratura Circuli] Problema Avstriacvm Plvs Vltra Qvadratvra Circvli (shelfmark Leibn. Marg. 230, Stück 1)
# Folio 994, page id 1815201908:1051
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YNOVLA DEDTADATCA
PROPOSITIO XLIK
alcerum planum DF. NO ecucuns ecant L2L, secans planum DCL
99
Aca Ccongula, qualis supra, quam ad exrremitarem diamerri con-
cingat planum, crian gulareDCF, Sccans planum ellipricum
AFNC sccundum rectam CL, Comcnsal alirem eandem rngulam de
que per rectam aliqua L e Motalem diametro; planum axi aequidi-
cans, producens in superticie ungulari rectam M N, Secans vero pla-
lindrica MC F. N.
recta D F. planum vero ellipricum AFNC recta FTKP. Ponatur deni-
num ODF. N sccundum rectam CFI.
Dicoplanum concingens CL. au p  at7
Deorsraoto.
Emonstracum est in a2. huius, concingens planum OD F. N elle xquale rectari.
sulo quodlineis AC, I. C concinerur. Rursum per 46. huius supertcies cxlindri.
Ca MCF. NV, que segmencum rngulare cinsic, aequacur rectansulo sub ijldem lincis
AC, T C comprehenso. Ergo planum concingens ODF N superticiei cxlindricae
MCC F. N ongulare legmencum ambienci aqualc est. Quod crar demonstrandum.
PR O POSITIO L.
Aca sicrngula, qualis supra, quam cominsar planum aliquod le-
cundum rectam BC: ponantur aurem bina plana axi parallela per
rectas MI, ON diamerro normales, secantia planum contingens le-
cundum rectas FHI, F. O, luverticiem vero vosalatem secundum rectas
A, NL.
Dico