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

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IN Propofitione fecunda, expoſita figura Coroll. antec. confor-
miter
, patet, quam rationem habeat folidum fimilare genitum
ex
, DN, ideft cylindricus in bafi figura deſcripta à baſi, PN, cuius
latus
eſt, HN, ad ſolidum ſibi ſimilare genitum ex portione, VCB
FR
,.
i. (ſi omnes figuræ ſimiles ipſius, DN, ſint circuli diametros
in
, DN, habentes, &
omnes figuræ fimiles portionis, VCBFR,
ſint
pariter circuli rectè axem, BO, ſecantes, &
diametros in eadem
portione
ſitos habentes, quicirculi ſint genitricibus erecti) cylindrus,
DN
, ad portionem ſphæræ, velſphæroidis, VCBFR, velſi figu-
173[Figure 173] ſint recti lineę, patetratio, quam
habet
prifma, DN, ad ſolidum ſibi
ſimilare
genitum ex portione, VCB
FR
, circuli, vel ellipſis, BCOF.
Ductis autem rectis, BP, PN, pa-
tet
ſimiliter ratio, quam habet co-
nus
, BPN, ad portionem ſphæræ,
vel
ſphæroidis, VCBFR, fiue py
ramis
, BPN, ad ſolldum ſimilare
genitum
ex triangulo, BPN, (in-
telligeiemper
hęc ſolida inuicem ge-
nita
iuxta regulas in Theorematibus
aſſumptas
, ne toties id repetatur)
ſiue
tandem, quam habet vniuerſa-
liter
ſolidum ſimilare genitum ex, DN, vel triangulo, BPN, ad ſo-
lidum
ſibi ſimilare genitum ex portione, VCBFR, &
hocſi, BO,
ſit
axis quod ſi tantum fit diameter eædem rationes colligentur ad
modum
ſuperioris Theorematis.
Eſtergo in figura cylindricus, D
N
, adportionem ſphæræ, vel ſphæroidis, VCBFR, vel priſma,
DN
, ad ſolidum ſimilare genitum ex portione, VCBFR, veltan-
dem
quodlibet ſolidum ſimilare genitum ex, DN, ſiue quilibet cy-
lindricus
genitus ex, DN, ad ſolidum ſibi ſimilare genitum ex por-
tione
, VCBFR, vt rectangulum ſub, BA, &
tripla, AO, adre-
ctangulum
ſub, BM, &
ſub compofita ex, MO, OA. Solidum ve-
ſimilare genitum ex triangulo, BPN, ſiue ſit conus, ſiue pyramis,
ſiue
tantum conicus, ad ſibi ſimilare genitum ex portione,

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