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

Table of contents

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[331.] THEOREMA XVI. PROPOS. XVII.
[332.] COROLLARIVM I.
[333.] COROLLARIVM II.
[334.] THEOREMA XVII. PROPOS. XVIII.
[335.] COROLLARIVM.
[336.] THEOREMA XVIII. PROPOS. XIX.
[337.] COROLLARIVM.
[338.] THEOREMA XIX. PROPOS. XX.
[339.] COROLLARIVM.
[340.] THEOREMA XX. PROPOS. XXI.
[341.] COROLLARIVM.
[342.] THEOREMA XXI. PROPOS. XXII.
[343.] THEOREMA XXII. PROPOS. XXIII.
[344.] THEOREMA XXIII. PROPOS. XXIV.
[345.] THEOREMA XXIV. PROPOS. XXV.
[346.] THEOREMA XXV. PROPOS. XXVI.
[347.] THEOREMA XXVI. PROPOS. XXVII.
[348.] THEOREMA XXVII. PROPOS. XXVIII.
[349.] THEOREMA XXVIII. PROPOS. XXIX.
[350.] THEOREMA XXIX. PROPOS. XXX.
[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.
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page |< < (259) of 569 > >|
279259LIBER III. bunt, eſſe eorundem axes. His autem prædemonſtratis ſequentia Corol-
laria
colliguntur, quæ quidem cum Typographo deeſſent conſueti buiu-
ſcemodi
caracteres, diuerſis imprimineceſſe fuit.
COROLLARIVMI.
IN Propoſ. prima igitur, ſi ſuppoſuerimus, PRDE, eſſe circu-
lum
, vel ellipſim, &
axem, ER, & circa eandem in baſi, DP,
parallelogrammum
, FP, quę quidem ſit baſis portionis, DEP, re-
ctè
ſecans axim, ER, deinde intellexerimus omnes figuras ſimiles
po@@onis
, DEP, eſſe circulos diametros in figura genitrice, DEP,
(cui ſut erecti) ſitos habentes, tunc, FP, erit figura genitrix ſolidi
ſimilaris
, quod erit cylindrus rectus, &
DEP, erit figura genitrix
ſolidi
præ@@ ſimilatis, quod erit portio ſphæræ, vel ſphæroidis,
cuius
axis, ER, &
quia patet ex ſupradictis, quam rationem habeat
ſolidum
ſimilare genitum ex, FP, ad ſibi ſimilare genitum ex, DE
P@uxta
regulam, DP, ide@ patet ex ſupradictis, quam rationem ha-
beat
cylindrus, FP, ad portionem ſphæræ, vel ſphæroidis, DEP,
ſiue
, DP, tranſeat per centrum, A, ſiue non.
Similiter ſi ſuppoſue-
rimus
, EDRP, eſſe ſphæroidem, &
, ER, non axim, ſed diame-
trum
, &
ſecari per ellipſim, DSPR, obliquè ad diametrum, ER,
&
circa eandem diametrum, EB, in eadem baſi ellipſi, DSPR,
eſſe
cylindricum, FP, ſecari autem cylindricum, &
portionem ſphæ-
roidis
planis parallelis ipſi ellipſi, DP, quę intelligatur erecta plano,
DEPR
, conceptæ in ipſo cylindrico figuræ erunt omnes figuræ ſi-
11Corollar.
47
. lib. @.
miles parallelogrammi, FP, &
quæ ſiunt in portione ſphæroidis, D
EP
, erunt omnes figuræ ſimiles portionis, DEP, omnes inquam
ellipſes
ſimiles ellipſi, DP, (eſt enim idem, ſiue intelligas has figu-
ras
ſimiles deſcribi omnibus lineis figurarum genitricium, FP, DE
P
, ſiue percipias ealdem produci per ſectionem corporum per plana
factam
ipſi, DP, parallela) &
quia patet ratio harum omnium ſimi-
lium
ſigurarum, ſiue ellipſium inter ſe ex ſupradictis, &
ſubinde ſoli-
dorum
ſimilarium genitorum ex, FP, &
portione, DEP, qucrum
vnum
eſt cylmdricus, alterum eſt portio ſphæroidis ſecta plano, D
P
, ideo patet, quam rationem habeat cylindricus, FP, ad portio-
nem
, DEP, .
@. eſſeeandem, quam habet compoſita ex ſexta parte,
EB
, &
dimidia, BR, ad ipſam, BR, & hoc, ſiue, ER, ſit axis,
ſiuenon
;
Quod ſi, DP, tranſeat per centrum, A, cylindricum, FP,
eſſe
ſexquialterum portionis ſphærę, vel ſphęroidis, DEP.
Ijſdem
vijs
patebit conum, ſiue conicum, EDP, ad portionem ſphærę, vel
ſphæroidis
, DEP, eſſe vt, BR, ad compoſitam ex, BR, &
dimi-
dia
totius, ER, quod ſi, DP, per centrum tran@eat, conum, vel

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