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

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149129LIBER II. veluti, BE, ID, iunctæ ſunt in linea, QL, & , Σ 2, 3 Λ, in linea,
Τ Γ,) ergo quę tangentibus dictis æquidiſtant in ſigur s, KQM, Π
Τ Ω, &
diuidunt incidentes, KM, ΠΩ, ſimiliter ad eandem par-
tem, &
iacent inter ipſas incidentes, & circuitum figurarum ad ean-
dem partem eodem ordine ſumptæ, ſunt vt ipſæ incidentes, ergo fi-
gurę, KQM, ΠΤΩ, ſunt ſimiles, &
earundem homologarum re-
11Defin. 10.
lib. 1.
gulæ eædem tangentes, &
earum incidentes ipſæ, KM, Π Ω.
B. SECTIO SECVNDA.
PRoducantur nunc ipſę, KM, ΠΩ, indefinitè verſus puncta, M,
Ω, &
ab ipſis productis ſumantur partes æquales, MP, ipſi, K
M, &
, ω & , ipſi, ΠΩ, & per puncta, P, & , ducantur dictis tangen-
tibus parallelę, ZP, ℟ &
, quoniam ergo, KM, ΠΩ, ſunt inciden-
22Corollar.
23. lib. 1.
tes ſimilium figurarum, KQM, ΠΤΩ, ideò habebimus etiam ho-
mòlogas earundem regulis ipſis incidentibus, KM, ΠΩ, ductis er-
go ex oppoſito tangentibus eaſdem figuras, KQM, ΠΤΩ, paral-
lelis ipſis, KP, Π &
, quæ ſint, XZ, β ℟, poterimus transferre om-
nes lineas figura@um, KQM, ΠΤΩ, in figuras ipſis, ZP, ℟ &
, ad-
iacentes, translatione facta regulis, KP, Π &
, fiant ergo dictę tran-
33Iux. Sect.
A. huius
Propoſ.
ſlationes, vnde reſultent figu@æ, MZP, Ω℟ &
, quæ erunt æqua-
les ipſis, KQM, ΠΤΩ, &
ſubinde ipſis, ABD, ΦΣΛ, probab-
mus autem etiam eaſdem eſſe ſimiles (veluti in figuris, KQM, Π
443. huius. Τ Ω, factum eſt) &
, ZP, ℟ & , eſſe dictarum figurarum incidentes,
&
homologarum regulas ipſas, MP, Ω & , patet autem ex conſtru-
ctione integras eſſe in figuris, MZP Π℟ &
, tum quæ æquidiſtant
ipſis, ZP, ℟ &
, tum ipſis, MP, Π ℟, nam ex prima translatione
integras habuimus, quę in figuris, KQM, ΠΤΩ, ipſis, FM, ΔΩ,
erant æquidiſtantes, &
ſubinde etiam integras, quæ in figuris, MZ
P, Ω ℟ &
, ipſis, ZP, ℟ & , æquidiſtant, ex ſecunda translatione ve-
rò integras habuimus eas, quę ipſis, MP, Ω &
, æquidiſtant, & hęc
per conſtructionem, quæ omnia ſeruare opus eſt.
C. SECTIO III.
NVncin figuris, MZP, Ω ℟ & , à maiori homologarum, MP,
Ω &
, quæ ſit, MP, aicindatur, OP, æqualis ipſi, Ω & , &
vt, MP, ad, PO, ita ſit quælibet in figura, MZP, parallela ipſi,
MP, adeius portionem, &
portionum termini ſint ex vna parte in
recta, ZP, ex alia verò inlinea, ZO, erit ergo, vt vna ad vnam .
i.
vt, MP, ad, PO, ita omnia ad omnia, . ſ. ita omnes lineæ

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