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

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[531.] COROLLARIVM XXVII.
[532.] SCHOLIV M.
[533.] Finis quarti Libri.
[534.] GEOMETRIÆ CAVALERII. LIBER QVINTVS. In quo de Hyperbola, Oppoſitis Sectionib us, ac ſolidis ab eiſdem genitis, babetur contemplatio. THEOREMA I. PROPOS. I.
[535.] THEOREMA II. PROPOS. II.
[536.] THEOREMA III. PROPOS. III.
[537.] THEOREMA IV. PROPOS. IV.
[538.] THEOREMA V. PROPOS. V.
[539.] PROBLEMA I. PROPOS. VI.
[540.] THEOREMA VI. PROPOS. VII.
[541.] THEOREMA VII. PROPOS. VIII.
[542.] THEOREMA VIII. PROPOS. IX.
[543.] THEOREMA IX. PROPOS. X.
[544.] THEOREMA X. PROPOS. XI.
[545.] THEOREMA XI. PROPOS. XII.
[546.] THEOREMA XII. PROPOS. XIII.
[547.] THEOREMA XIII, PROPOS. XIV.
[548.] SCHOLIVM.
[549.] THEOREMA XIV. PROPOS. XV.
[550.] THEOREMA XV. PROPOS. XVI.
[551.] COROLLARIVM.
[552.] THEOREMA XVI. PROPOS. XVII.
[553.] THE OREMA XVII. PROPOS. XVIII.
[554.] THEOREMA XVIII. PROPOS. XIX.
[555.] COROLLARIVM.
[556.] SCHOLIVM.
[557.] THEOREMA XIX. PROPOS. XX.
[558.] THEOREMA XX. PROPOS. XXI.
[559.] A@@ter ſupradictam rationem explicare.
[560.] COROLLARIVM:
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391371LIBER V. ptis omnibus quadratis, HQ, æquatur autem rectangulum, EM
N, cum rectangulo ſub, EM, &
iub compoſita ex {1/3}. EM, & {1/2}. N
O, rectangulo ſub, EM, &
ſub compoſita ex {1/3}. EM. integra, MN,
&
{1/2}. NO, ergo omnia quadrata, SF, ad omnia quadrata fruſti, D
HGF, demptis omnibus quadratis, HQ, erunt vt rectangulum,
OEN, ad rectangulum ſub, EM, &
ſub compoſita ex {1/3}. EM, in-
tegra, MN, &
{1/2}. NO.
Omnia verò quadrata trianguli, DMF, ad eadem erunt, vt {1/3}.
rectanguli, OEN, ad rectangulum ſub, EM, & ſub compoſita ex
{1/3}.
EM, integra, MN, & {1/2}. NO, . i. vt totum rectangulum ſub, O
EN, ad rectangulum ſub, EM, &
ſub compoſita ex, EM, tripla,
MN, &
, NX, . i. ſub, EM, & ſub compoſita ex, EX, & dupla, MN,
quæ oſtendenda erant.
THEOREMA V. PROPOS. V.
IN eadem figura, regula eadem retenta, oſtendemus om-
mnia quadrata, AF, demptis omnibus quadratis hyper-
bolæ, DNF, ad omnia quadrata, SF, demptis omnibus
quadratis fruſti, HDFG, eſſe vt parallelepipedum ſub cõ-
poſita ex ipſa, XE, EN, &
ſub quadrato, NE, ad parallele-
pipedum ſub compoſita ex eadem, XE, &
cum, EN, NM,
&
ſub quadrato, ME.
Quia enim omnia quadrata, AF, ad omnia quadrata hyperbo-
11Is huius. læ, DNF, ſunt vt, OE, ad compoſitam ex {1/2}.
ON, & {1/3}. NE, ideò
per conuerſionem rationis, &
conuertendo omnia quadrata, AF,
demptis omnibus quadratis hyperbolæ, DNF, ad omnia quadra-
ta, AF, erunt vt compoſita ex {1/2}.
ON, & {2/3}. NE, ad, OE, . i. ſum-
pta, NE, communialtitudine, vt rectangulum ſub compoſita ex
{1/2}.
ON, & {2/3}. NE, & ſub, NE, ad rectangulum, OEN. Quoniam
verò omnia quadrata, AF, demptis omnibus quadratis hyperbo-
læ, DNF, ad omnia quadrata, SF, demptis omnibus quadratis
fruſti, DHGF, habent rationem compoſitam ex ea, quam habent
omnia quadrata, AF, demptis omnibus quadratis hyperbolæ, D
22Defin. 12.
1. I.
NF, ad omnia quadrata, AF, .
i. ex ea, quam habet rectangulum
ſub compoſita ex {1/2}.
ON, & {2/3}. NE, & ſub, N E, ad rectangu-
lum, NEO;
& ex ratione, quam habent omnia quadrata,
AF, ad omnia quadrata, SF, ideſt ex ea, quam habet, NE,
ad, EM, &
tandem ex ea, quam habent omnia quadrata, SF,
3310, 1.2. ad omnia quadrata, SF, demptis omnibus quadratis fruſti,

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