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

Table of contents

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[561.] THEOREMA XXI. PROPOS. XXII.
[562.] COROLLARIVM. I.
[563.] COROLLARIVM. II. Ex præcedenti deductum.
[564.] THEOREMA XXII. PROPOS. XXIII.
[565.] THEOREMA XXIII. PROPOS. XXIV.
[566.] THEOREMA XXIV. PROPOS. XXV.
[567.] THEOREMA XXV. PROPOS. XXVI.
[568.] THEOREMA XXVI. PROPOS. XXVII.
[569.] THEOREMA XXVII. PROPOS. XXVIII.
[570.] COROLLARIVM.
[571.] THEOREMA XXVIII. PROPOS. XXIX.
[572.] COROLLARIVM.
[573.] THEOREMA XXIX. PROPOS. XXX.
[574.] SCHOLIVM.
[575.] COROLLARIVM I.
[576.] COROLLARIVM II.
[577.] COROLLARIVM III.
[578.] COROLLARIVM IV.
[579.] COROLLARIV M V.
[580.] COROLLARIVM VI.
[581.] COROLLARIVM VII.
[582.] COROLLARIVM VIII.
[583.] COROLLARIVM IX.
[584.] COROLLARIVM X.
[585.] COROLLARIVM XI.
[586.] COR OLLARIVM XII.
[587.] COROLLARIVM XIII.
[588.] COROLLARIV M XIV.
[589.] COROLLARIVM XV.
[590.] COROLL. XVI. SECTIO PRIOR.
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562542GEOMETRI Æ libus figuris, in antecedentibus prop. conſideratis. Appendix au-
tem Cor 6 reſtauratione minimè indigere manifeſtum eſt.
Et hæc
circa prop.
lib. 4. adnotaſſe ſufficiat, reliquum eſt, vt ad lib. 5. exami-
nandum nos conferamus.
THEOREMA XXVII. PROPOS. XXVII.
IN Schemate prop. 1. lib. 5. regula eadem retenta, oſten-
demus quadratum ſolidum parallelogrammi, AF, ad
quadratum ſolidum hyperbolæ, DBF, eſſe vt, OE, ad com-
poſitam ex, NB, &
. {1/3}. BE.
Aſſumatur . n. ex eo paral-
369[Figure 369] lelogrammum, CE, cum ſe-
mihyperbola, BEF, &
recta,
OE, necnon, MG, quæcum-
q;
ex ordinatim applicatis ad
diametrum, BE, extendantur
autem, CB, FE, &
fiant BD,
EQ, ſingulæ æquales ipſi, E
O, necnon, RE, AB, ſingulæ
æquales ipſi, EB, &
iungan-
tur, DQ, AR, AE, quas, GM,
indefinitè quoq;
producta ſecet in punctis, P, S, T. Erunt ergo, D
R, DE, AE, parallelogramma.
Quoniam verò quad. EF, ad quad.
1139, & ſch.
40. l. 1.
MH, eſt vt rectang.
OEB, ad, OMB, hoc eſt vt rectangulum, QER,
ad rectangulum, PTS, permutando quadratum, FE, ad rectangu-
lum, QER, erit vt quadratum, HM, ad rectangulum, PTS, quod
&
in cæteris oſten demus, ergo quadratum ſolidum, BEF, & re-
ctangulum ſolidum ſub trapezio, DQEA, &
triangulo, AER, erunt
proportionaliter analoga, ac in proportione quadrati, FE, &
re-
ctanguli, QER, Conſimili modo probabimus quadratum ſolidum,
CE, eſſe æqualiter analogum rectangulo ſolido ſub, OB, BR, &
ad
ipſum pariter eſſe in proportione quadrati, EF, ad rectangulum, Q
ER, ergo dicta ſolida proportionalia erunt, &
permutãdo quadratũ
ſolidumCE, ad quad, ſolidũ, BEF, erit vt rectangulum ſolidum ſub,
QB, BR, ad rectangulum ſolidum ſub, DQEA, ARE, hoc eſt vt, QE,
2217. huius. ad cõpoſitam ex {1/2}.
QR, & {1/3}. RE, hoc eſt vt, OE; ad compoſitãex, N
B, (quæ eſt dimidia, BO,) &
{1/3}. BE, igitur, viſo ſchemate dictę prop.
1 quadratum ſolidum, AF, ad quadratum ſolidum, DBF, erit vt, O
E, ad compoſitam ex, NB, &
{1/3}. BE, quod demonſtrare oportebat.

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