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# Title: [Problema Austriacum Plus Ultra Quadratura Circuli] Problema Avstriacvm Plvs Vltra Qvadratvra Circvli (shelfmark Leibn. Marg. 230, Stück 1)
# Folio 1115, page id 1815201908:1172
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Qr A DR A FYRA CTR CVLF
R OPOSIFTO XRVIII
IIdem manentibue:
Dicorectangula OPS, RP T, L. PM eAte proporrionalia.
Demonstratio.
Vncenim PO. PR, P T inconcinua analogia: irem PS, P Y, PM per eandem
Dsynein analogia concinua. erso per ea que demonstrauimus in libro progreso- 2 26. huius.
numbeciam rectansula POS, RP Y, L. PM eandem proportionem concinuAHE. B58. Progr:
Ouod crac demonstrandum.
Ildem posiris:
PROPOSITIO XXIX.
L Dico rectangUlA RPT, FPV, LPM, candem continuare analo:
Siam.
Demonstratio.
Scensum est, Ceam P R, P F, P L, quamP P, P V, PM, este in concinua. ergO c huini
deriam rectangula R P T, F P V. L. P M lunc in concinua analogia. Ouod erac ds8. Progr.
demonstrandum.
construuncur habencia communem alticudinem P X, proporcionalia esse
inter se, quemadmodum limilicer lunc parallelepipeda luper rectangulis
RPP, F Pa, e L. P ML constitura, habencia communem quoque alcicudi-
nem PX.
Demon.
EROPOSITIO LLL.
gonali B P. in a, ex quibus punclls phantur K d, aP, C ~ qua aquidistent
AB. Denigue ex punctis 9, R, L, Comctruantur 2B, RZ, FiB quae cidem
Vod h eadem manente Arura ponatur NO parallela recte C D sive
L.Moccurrens lectionibus BIEF, B GF in R e G, rectae vero dia
rectae AB linc parallela.
Dico parallelepipeda que superbasibus rectangulis QPd, RP P, L PM
 e . t it ae  te     e ut et e u  e  e stis e u at   u  e  in i  e  s       ee  i  u p  e        tn