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

150130GEOMETRIÆ MZP, adomnes lineas figuræ, OZP, regula, MP, & ideò vt, M
11Goroll. 4.
huius. P, ad, PO, vel ad, Ω & , ita figura, MZP, ad figuram, OZP,
224. huius. quod etiam ſerua.

VLterius ab ipſis, OP, Ω & , abſcindantur partes æquales, O
R, ΩΥ, & per puncta, R, Y, ducantur ipſis, ZP, ℟ & , æ-
quidiſtantes, SR, VY, & per, S, vbi, RS, ſecat lineam, ZO, du-

88[Figure 88] catur, HC, æquidiſtans ipſi, M
P, & per, C, vbi, HC, ſecat li-
neain, ZM, ducatur, CN, pa-
rallelaipſi, ZP, ſecans, MP, in,
N; eſt igitur vt, MP, ad, PO,
ita, CH, ad, HS, per conſtru-
ctionem . i. ita, NP, ad, PR, &
permutando, vt, MP, ad, PN,
ita, OP, ad, PR, diuidendo, vt,
MN, ad, NP, ita, OR, ad, R
P, . i. ita, ΩΥ, ad, Y & , igitur ip-
ſæ, CN, VY, æquidiſtant regu-
lis homologarum, quę ſunt, ZP,
℟ & , & diuidunt ad eandem par-
tem ſimiliter ipſas incidentes, M
P, Ω & , (ſi . n. ZP, ℟ & , ſtatue-
33Corollar.
123. lib. 1. ris regulas homologarum ipſę, M
P, Ω & , ſunt incidentes, ſi verò
has ſtatueris regulas, illæ erunt in-
cidentes, ambę . n. terminant in
oppoſitas tangentes, quæ ſunt re-
gulæ homologarum earundem) ergo, CN, ad, VY, erit vt, MP,
ad, Ω & , . i. vt, ZP, ad, ℟ & , & ſunt, CN, SR, æquales, & , S
R, VY, vtcunque ductæ ipſis, ZP, ℟ & , æquidiſtantes, ergo ve,
ZP, ad, ℟ & , ita, SR, ad, VY, ergo vt, ZP, ad, ℟ & , ita erit
444. huius. figura, OZP, ad figuram, Ω ℟ & , quod pariter ſerua.

QVoniam verò figura, MZP, ad figuram, Ω ℟ & , habet ratio-
55Defin. 12.
lib. 1. nem compoſitam ex ratione figuræ, MZP, ad figuram, O
ZP, . i. ex ratione, MP, ad, Ω & , & ex ratione figuræ, OZ
P, ad figuram, Ω ℟ & , . i. ex ratione ipſius, ZP, ad, ℟ & a . i. ex