Cavalieri, Buonaventura, Geometria indivisibilibvs continvorvm : noua quadam ratione promota

Table of contents

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[351.] THEOREMA XXX. PROPOS. XXXI.
[352.] COROLLARIVM.
[353.] THEOREMA XXXI. PROPOS. XXXII.
[354.] COROLLARIVM.
[355.] THEOREMA XXXII. PROPOS. XXXIII.
[356.] COROLLARIVM.
[357.] THEOREMA XXXIII. PROPOS. XXXIV.
[358.] SCHOLIVM.
[359.] COROLLARIVMI.
[360.] COROLLARIVM II.
[361.] COROLLARIVM III.
[362.] COROLLARIVM IV.
[363.] COROLLARIVM V.
[364.] COROLL. VI. SECTIO PRIOR.
[365.] SECTIO POSTERIOR.
[366.] COROLLARIVM VII.
[367.] COROLLARIVM VIII.
[368.] COROLL. IX. SECTIO PRIOR.
[369.] SECTIO POSTERIOR.
[370.] COROLL. X. SECTIO PRIMA.
[371.] SECTIO II.
[372.] SECTIO III.
[373.] SECTIO IV.
[374.] SECTIO V.
[375.] COROLLARIVM XI.
[376.] COROLLARIVM XII.
[377.] COROLLARIVM XIII.
[378.] COROLLARIVM XIV.
[379.] COROLL. XV. SECTIO PRIMA.
[380.] SECTIO II.
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382362GEOMETRIÆ regulam, ZG, vt in poſteriore dicti Theor. parte dictum eſt.
COROLLARIVM XXV.
IN Propoſitione 48: ſumatur de figura Propoſit. 46. parabola.
ZAG, cum baſi, ZG, & axi, AQ, & axi, AQ, & reſecto eius minori fruſto,
DPG, de eiuſdem figura adnuc ſumatur, AXG, trilineum, in quo
ducitur, DE, æquidiſtans ipſi, AX, &
ſeorſim ponatur, vt autem fiat
261[Figure 261] ſolitum exemplum, reuoluatur parabola, ZAG, circa manentem
axim, AQ, &
fruſtum minus eiuſdem, quod eſt, DPG, circa, DP,
ex quo fiat aceruus minor, RDG.
Inſuper trilineum, AXG, reuo-
luatur circa, GX, vt fiat apex parabolicus, AGZ, &
ex GDE, eius
fruſtum, GDY;
patet igitur ex ipſa Prop. 48. aceruum minorem,
RDG, ad conoidem parabolicam, ZAG, habere rationem compo-
ſitam ex ea, quam habet compoſita ex {1/3}.
ZP, & {1/6}. PG, ad, ZP, &
ex ratione parallelepipedi ſub, DP, &
quadrato, PG, ad dimidium
parallelepipedi ſub, AQ &
quadrato, QG; & ſic etiã eſſe quodlibet
ſolidum ſimilare genitum ex fruſto parabolæ, DGP, ad ſibi ſimila-
re genitum ex ſemiparabola, AQG;
iuxta communem regulam,
ZG.
Item ex eadem Prop. patet apicem parabolicum, AGZ, ad
eius fruſtum, DGY, habere rationem compoſitam ex ea, quam
habet ſexta pars parallelepipedi ſub AQ, &
quadrato, QG, ad pa-
rallelepipedum ſub, DP, &
quadrato, PG, & ex ea, quam habet,
ZP, ad reſiduum, demptis ab eadem, ZP, {2/3}.
ZP, cum {1/6}. PG: Sic
autem quoque erit quodcunque ſolidum ſimilare genitum ex trili-
neo, AXG, ad ſibi ſimilare genitum ex trilineo, GDE, iuxta com-
munem regulam, AX.

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