Cavalieri, Buonaventura, Geometria indivisibilibvs continvorvm : noua quadam ratione promota
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Sitigitur parallelogrammum, AN, & illi inſcripta vtcunq; figu-
ra
, BDMO, &
ſumpta pro regula, EN, ſit ducta vtcunque intra
parallelogrammum
, AN, ipſa, DO, quę cadat etiam tota intra fi-
guram
, BDMO, ſit etiam ducta alia vtcunque parallela ipſi, EN,
nempè
, VR, portiones autem eiuſdem, VR, ſint extra figuram,
ad
latera oppoſita, AE, CN, terminantes .
ſ. VI, SR, quæ ſint in-
tegræ
, &
inter ſe æquales. Dico omnia quadrata, AN, ad omnia
quadrata
figuræ, BDMO, cum rectangulis bis ſub figuræ, BDM
O
, &
ſub trilineis, BCO, ONM, . i. ſub omnibus portionibus, quę
terminant
ad latus, CN, extra figuram, BDMO, conſtitutis, elie
166[Figure 166] vt, AN, ad figuram, BDMO:
Omnia
enim
quadrata, AN, ad rectangula ſub,
A
N, &
ſub figura, BDMO, ſunt vt, A
N
, ad figuram, BDMO, ſed rectangula
ſub
, AN, &
ſub figura, BDMO, diui-
11Coroll. 1.
26
. lib. 2.
duntur in rectangula ſub eadem figura, B
D
MO, &
ſub trilineis, BAD, DEM,
ſub
eadem, &
ſub trilineis, BCO, ON
M
, &
in rectangula ſub eadem in eandem
22A. 23. l. 2. figuram .
ſ. in omnia quadrata eiuſdem fi-
guræ
, BDMO, quia verò linearum æqui-
diſtantium
, regulæ, EN, portiones, quæ
ſunt
in eadem recta linea extra figuram adiacentes lateribus oppoſi-
tis
, AE, CN, ſunt &
integræ, & æquales, ideò ſicuti rectangu-
lum
, VIS, eſt æquale rectangulo, ISR, ita rectangula ſub figura,
B
DMO, &
trilineis, BAD, DEM, erunt æqualia rectangulis
ſub
eadem figura, BDMO, &
ſub trilineis, BCO, ONM, ſunt
ergo
rectangula ſub, AN, &
ſub figura, BDMO, æqualia om-
nibus
quadratis figuræ, BDMO, cum rectangulis bis ſub eadem,
&
ſub trilineis, BCO, ONM; omnia autem quadrata, AN, ad
rectangula
ſub, AN, &
ſub figura, BDMO, ſunt vt, AN, ad fi-
guram
, BDMO;
ergo omnia quadrata, AN, ad omnia

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