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

Table of contents

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[51.] PROBLEMA I. PROPOS. 1.
[52.] COROLLARIVM.
[53.] PROBLEMA II. PROPOS. II.
[54.] PROBLEMA III. PROPOS. III.
[55.] SCHOLIVM.
[56.] THEOREMA I. PROPOS. IV.
[57.] COROLLARIVM I.
[58.] COROLLARIVM II.
[59.] THEOREMA II. PROPOS. V.
[60.] THEOREMA III. PROPOS. VI.
[61.] COROLLARIVM.
[62.] THEOREMA IV. PROPOS. VII.
[63.] THEOREMA V. PROPOS. VIII.
[64.] COROLLARIV M.
[65.] THEOREMA VI. PROPOS. IX.
[66.] COROLLARIVM.
[67.] THEOREMA VII. PROPOS. X.
[68.] THEOREMA VIII. PROPOS. XI.
[69.] COROLLARIV M.
[70.] LEMMA PRO ANTECED. PROP.
[71.] THEOREMA IX. PROPOS. XII.
[72.] COROLLARIV M.
[73.] THEOREMA X. PROPOS. XIII.
[74.] THEOREMA XI. PROPOS. XIV.
[75.] THEOREMA XII. PROPOS. XV.
[76.] SCHOLIVM.
[77.] THEOREMA XIII. PROPOS. XVI.
[78.] COROLLARIVM.
[79.] THEOREMA XIV. PROPOS. XVII.
[80.] COROLLARIVM.
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133113LIBER II. ræ, ADC, ſumptis, regula, AC, quod in figuris planis oſtenden
dum erat.
Ita ſuperpoſitis æqualibus figuris ſolidis, ita vt duæ in ipſis aſſum-
ptæ vtcunq;
regulæ ſint ad inuicem ſuperpoſitæ, vel æquidiſtantes,
&
reſiduorum facta ſemper ſuperpoſitione ita, vt omnia eorum pla-
na regulis iam iuperpoſitis ęquidiſtent, tandem, quia figurę ſunt æ-
quales, dictæ partes erunt ad inuicem congruentes, &
conſequen-
ter integrę quoq;
figuræ erunt congruentes, ergo earum omnia pla-
na ſumpta cum dictis regulis erunt ad inuicem congruentia, ergo &

æqualia, quod in figuris ſolidis oſtendere quoque opus erat.
COROLLARIV M.
_H_Inc patet in eadem figura plana, omnes lineas ſumptas cum qua-
damregula æquart omnibus lineis ſumptis cum alia quauis regu-
la;
& in figuris ſolidis omnia plana vnius ſumpta cum quadam regula
æquari omnibus planis eiuſdem, regula quauis aſſumpta;
vnde ex. gr.
ſecto planis cylindro æquidiſtanter axi, qua ſectione in ipſo creantur pa-
11_Coroll. 6._
_lib. 1._
rallelogramma, &
ſecto eodem planis æquidistanter baſi ductis, qua ſe-
ctione creantur in eodem circuli, patet ex hoc, omnia parallelogramma
22_Corol. 12._
_lib. 1._
dicti cylindri, regula eorundem vno, eſſe æqualia omnibus circulis eiu-
ſdem, regula baſi.
THEOREMA III. PROPOS. III.
FIguræ planæ habent inter ſe eandem rationem, quam
eorum omnes lineæ iuxta quaniuis regulam aſſumptæ;
Et figuræ ſolidæ, quam eorum omnia plana iuxta quamuis
regulam aſſumpta.
Sint figuræ planæ vtcunque, A, D. Dico,
73[Figure 73] A, figuram ad nguram, D, eſſe vt omnes lineę
figuræ, A, iuxta quamuis regulam aſſumptæ
ad omnes lineas figuræ, D, iuxta quamuis re-
gulam aſſumptas.
Intelligantur ergo omnes
lineæ figuræ, A, &
, D, aſlumptæ iuxta qua-
ſdam regulas, deinde capiantur quotcunque fi-
guræ, BC, ſingulæ æquales figuræ, A, &
fi
guræ, D, quotcunque ęquales figurę, vt, E;
nunc, ſi continuum
componitur ex indiuiſibilibus, patet abſque alia demonſtratione fi-
guram, A, ad figuram, D, eſſe vt omnes lineæ figurę, A, ad

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