DelMonte, Guidubaldo
,
In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata
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<
archimedes
>
<
text
>
<
body
>
<
chap
id
="
N10019
">
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p
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N163BC
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main
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s
id
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<
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xlink:href
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077/01/165.jpg
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pagenum
="
161
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niam figuræ, ipforum què centra inter ſe coaptari poſſunt. </
s
>
<
s
id
="
N163D8
">vt
<
lb
/>
omnibus figuris rectilineis ęqualibus, & ſimilib^{9} accidere po
<
lb
/>
teſt. </
s
>
<
s
id
="
N163DE
">Hoc tamé contingere poſſe in parabolis, vt AKB BLC, vi
<
lb
/>
detur in
<
expan
abbr
="
cõueniés
">conueniés</
expan
>
.
<
expan
abbr
="
Nã
">Nam</
expan
>
quamuis AKB BLC ſint æquales, & ſint
<
lb
/>
<
expan
abbr
="
etiã
">etiam</
expan
>
ſimiles; non ſunt tamen ſimiles ea ſi militudine, vt ſuntre
<
lb
/>
ctilineæ figuræ; vtantea diximus. </
s
>
<
s
id
="
N163F1
">Quod etiam
<
expan
abbr
="
perſpicuũ
">perſpicuum</
expan
>
fit ex
<
lb
/>
hoc, quia non ſemper coaptari poreiſt portio AKB
<
expan
abbr
="
cũ
">cum</
expan
>
portio
<
lb
/>
ne BLC.
<
expan
abbr
="
nõ
">non</
expan
>
.
<
expan
abbr
="
n.
">enim</
expan
>
ſemper recta linea BC erit æqualisipſi BA;
<
expan
abbr
="
neq́
">ne〈que〉</
expan
>
;
<
lb
/>
ſectionis linea BLC ſectionis lineę BKA ęqualis exiſtet.
<
expan
abbr
="
Cũ
">Cum</
expan
>
<
expan
abbr
="
nõ
">non</
expan
>
<
lb
/>
ſemper AC, & quæ ſuntipſi AC æquidiſtates ad rectos ſint an
<
lb
/>
gulos diametro BD. ſi.n. </
s
>
<
s
id
="
N16419
">ęquidiſtantes lineę diametro fuerint
<
lb
/>
perpendiculares, tunc AB BC inter ſe ęquales eſſent;
<
expan
abbr
="
portioq́
">portio〈que〉</
expan
>
;
<
lb
/>
AKB
<
expan
abbr
="
cũ
">cum</
expan
>
portione BLC coaptari poſſet: ſecùs autem minimè.
<
lb
/>
Quare centra grauiratis HI lineas KFLG in eadem proportio
<
lb
/>
ne ſecare minimèſupponi poſſe videtur; tùm exijs, quæ dicta
<
lb
/>
ſunt; tú quia hoc oſtendet Archimedes in ſeptima propoſitio
<
lb
/>
ne. </
s
>
<
s
id
="
N1642F
">quòd ſi adhuc non eſt
<
expan
abbr
="
demõſtratú
">demonſtratú</
expan
>
,
<
expan
abbr
="
nõ
">non</
expan
>
poteſt
<
expan
abbr
="
quoq́
">quo〈que〉</
expan
>
; ſuppo
<
lb
/>
ni; præſertim cùm ſit demonſtrabile. </
s
>
<
s
id
="
N1643F
">ac propterea
<
expan
abbr
="
demõſtra-tio
">demonſtra
<
lb
/>
tio</
expan
>
nullam videturvim haberead
<
expan
abbr
="
oſtendendũ
">oſtendendum</
expan
>
, quod propoſi
<
lb
/>
tú fuit. </
s
>
<
s
id
="
N1644D
">Huic
<
expan
abbr
="
tamẽ
">tamen</
expan
>
occurri poſſevidetur
<
expan
abbr
="
cũ
">cum</
expan
>
Eutocio in exphca
<
lb
/>
tione huiusloci dicendo, hoc ſupponere Archimedé, quia por
<
lb
/>
tiones AKBBLC ſuntęquales, quarú diametri KFLG ſunt ę
<
lb
/>
quales, &
<
expan
abbr
="
ęquidiſtãtes
">ęquidiſtantes</
expan
>
, quæ ſimiliter diuiduntur à punctis HI;
<
lb
/>
vnde erit kG ad HF, vt LI ad IG. ex quibus colligit HF ipſi IG
<
lb
/>
<
expan
abbr
="
æqualẽ
">æqualem</
expan
>
eſſe; ac propterea HG
<
expan
abbr
="
parallelogrãmũ
">parallelogrammum</
expan
>
exiltere. </
s
>
<
s
id
="
N1646C
">Quæ
<
expan
abbr
="
tñ
">tnm</
expan
>
<
lb
/>
reſponſio
<
expan
abbr
="
nõ
">non</
expan
>
eſt Eutocio digna. </
s
>
<
s
id
="
N16478
">cùm ex dictis
<
expan
abbr
="
nõ
">non</
expan
>
ſit omninò
<
lb
/>
demonſtratiua, vtres mathematicę
<
expan
abbr
="
requirũt
">requirunt</
expan
>
; quapropter omit
<
lb
/>
tenda eſt.hac.n.rationeſupponitur centra HI lineas KFLG in
<
lb
/>
eadem proportione ſecare.quod nullo modo ſupponi poteſt.
<
lb
/>
Quare dici poterit, & fortaſle rectiùs, quòd vis demonſtratio
<
lb
/>
nis videtur in hoc eſſe conſtituta, vt ſupponatur puncta HI
<
expan
abbr
="
v-bicunq́
">v
<
lb
/>
bicun〈que〉</
expan
>
; eſſe poſſe in lineis KFLG; ita vt ſiue ducta HI fuerit,
<
lb
/>
ſiue etiam non fuerit ipſi FG æquidiſtans, demonſtratio
<
expan
abbr
="
tamẽ
">tamen</
expan
>
<
lb
/>
ſuam ſemper habebit vim,
<
expan
abbr
="
idẽq́
">iden〈que〉</
expan
>
; concludet. </
s
>
<
s
id
="
N1649E
">Nam ex
<
expan
abbr
="
præcedẽ
">præcedem</
expan
>
.
<
lb
/>
ti patet centra grauitatis portionum AKB BLC eſſe in lineis
<
lb
/>
KF LG; hoceſt inter puncta KF, & LG.
<
expan
abbr
="
ſupponãturitaq́
">ſupponanturita〈que〉</
expan
>
;
<
expan
abbr
="
cẽ-tra
">cen
<
lb
/>
tra</
expan
>
grauitatis
<
expan
abbr
="
portionũ
">portionum</
expan
>
AKB BLC eſſe puncta HI
<
expan
abbr
="
vbicũq́
">vbicun〈que〉</
expan
>
; </
s
>
</
p
>
</
chap
>
</
body
>
</
text
>
</
archimedes
>