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

Table of contents

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[191.] COROLLARIVM.
[192.] THEOREMA XII. PROPOS. XII.
[193.] COROLLARIVM.
[194.] THEOREMA XIII. PROPOS. XIII.
[195.] COROLLARIVM.
[196.] THEOREMA XIV. PROPOS. XIV.
[197.] COROLLARIVM.
[198.] THEOREMA XV. PROPOS. XV.
[199.] A. DEMONSTRATIONIS SECTIO I.
[200.] B. SECTIO SECVNDA.
[201.] C. SECTIO III.
[202.] D. SECTIO IV.
[203.] E. SECTIO V. ET VLTIMA.
[204.] COROLLARIVM I.
[205.] COROLLARIVM II.
[206.] THEOREMA XVI. PROPOS. XVI.
[207.] SCHOLIV M.
[208.] THEOREMA XVII. PROPOS. XVII.
[209.] A. DEMONSTRATIONIS SECTIO I.
[210.] B. SECTIO II.
[211.] D. SECTIO IV.
[212.] E. SECTIO V.
[213.] F. SECTIO VI.
[214.] G. SECTIO VII.
[215.] H. SECTIO VIII. ET VLTIMA.
[216.] COROLLARIVM I.
[217.] COROLLARIVM II.
[218.] THE OREMA XVIII. PROPOS. XVIII.
[219.] THE OREMA XIX. PROPOS. XIX.
[220.] COROLLARIVM I.
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220200GEOMETRIÆ
THEOREMA II. PROPOS. II.
SI à circulo, vel ellipſi per lineam ad eorum axim, vel dia-
metrum ordinatim applicatam vtcunque portio abſcin-
datur, ſit autem parallelogrammum in eadem altitudine cum
dicta portione, ſed in baſi æquali ſecundę diametro, &
regula
baſis ipſius portionis:
Omnia quadrata dicti parallelogram-
miad omnia quadrata dictę pottionis erunt, vt rectangulum
ſub dimidia eiuſdem axis, vel diametri, &
ſub eiuſdem dimi-
diæ tripla, ad rectangulum ſub axi, vel diametro abſciſſæ
portionis, &
ſub compoſita ex axe, vel diametro reliquę por-
tionis, &
dimidia totius axis, vel diametri.
Sit igitur circulus, vel ellipſis, BVOR, eius axis, vel diameter,
BO, ordinatim ad ipſum applicata, VR, vtcumq;
abſcindens por-
tionem, VBR, ſit verò ſecunda diameter, CF, &
producta, VR,
ita vt, PN, ſit æqualis ipſi, CF, &
, PM, ipſi, CA, in baſi, PN,
&
altitudine portionis, VBR, ſit parallelogrammum, DN, & cir-
ca axim, vel diametrum, BM.
Dico ergo omnia quadrata paralle-
logrammi, DN, regula, VR, ad omnia quadrata portionis, VBR,
eſſe vt rectangulum ſub, BA, &
tripla, AO, ad rectangulum ſub, B
133[Figure 133] M, &
ſub compoſita ex, MO, OA; iun
gantur, VB, PB;
Omńia ergo quadrata
ſemiportionis, BCVM, ad omnia qua-
drata trianguli, BVM, ſunt vt, AO, O
M, ad, OM, .
i. ſumpta, BM, commu-
11Exant. ni altitudine, vt rectangulum ſub, BM,
MOA, ad rectangulum, BMO, omnia
225. Lib.2. autem quadrata trianguli, BVM, ad
33PerB.Co.
rollar.22.
lib.2.
omnia quadrata trianguli, BPM, ſunt
vt quadratum, VM, ad quadratum, P
M, velad quadratum, CA, .
i. vt rectan-
44Ex 40. l.1.
& eiuſdẽ
Scholio.
gulum, OMB, ad rectangulum, OAB, ergo ex æquali, &
conuer-
tendo omnia quadrata trianguli, BPM, ad omnia quadrata ſemi-
portionis, BVM, erunt vt rectangulum, BAO, ad rectangulum
5524. Lib. 2. ſub, BM, &
, MOA, & antecedentium tripla. ſ. omnia quadrata
parallelogrammi, DM, ad omnia quadrata ſemiportionis, BVM,
668. Lib.2. vel omnia quadrata parallelogrammi, DN, ad omnia quadrata
portionis, VBR, erunt vt rectangulum ſub, BA, &
tripla,

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