DelMonte, Guidubaldo
,
In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata
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archimedes
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text
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<
chap
id
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N10019
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pb
xlink:href
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077/01/088.jpg
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pagenum
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84
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<
p
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N12F72
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type
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head
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<
s
id
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N12F74
">PROPOSITIO. X.</
s
>
</
p
>
<
p
id
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N12F76
"
type
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main
">
<
s
id
="
N12F78
">Omnis parallelogrammi centrum grauitatis
<
lb
/>
eſt punctum, in quo diametri coincidunt. </
s
>
</
p
>
<
p
id
="
N12F7C
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type
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main
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<
s
id
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N12F7E
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<
emph
type
="
italics
"/>
Sit parallelogrammum
<
lb
/>
ABCD. & in ipſo ſit li
<
lb
/>
nea EF
<
emph.end
type
="
italics
"/>
bifariam
<
emph
type
="
italics
"/>
<
expan
abbr
="
ſecãs
">ſecans</
expan
>
<
emph.end
type
="
italics
"/>
<
lb
/>
<
arrow.to.target
n
="
fig35
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<
lb
/>
<
emph
type
="
italics
"/>
latera AB CD. itidem
<
lb
/>
què ſit KL
<
expan
abbr
="
ſecãs
">ſecans</
expan
>
AC BD
<
emph.end
type
="
italics
"/>
<
lb
/>
bifariam. </
s
>
<
s
id
="
N12FA3
">conueniant
<
lb
/>
què EF kL in H.
<
emph
type
="
italics
"/>
est
<
lb
/>
vti〈que〉 parallelogrammi
<
emph.end
type
="
italics
"/>
<
lb
/>
<
arrow.to.target
n
="
marg85
"/>
<
emph
type
="
italics
"/>
ABCD centrum grauita
<
lb
/>
tis in linea EF. hoc enim
<
lb
/>
oſtenſum eſt. </
s
>
<
s
id
="
N12FBB
">eadem verò de cauſa
<
emph.end
type
="
italics
"/>
centrum grauitatis ipſius AD
<
emph
type
="
italics
"/>
est
<
lb
/>
etiam in linea
<
emph.end
type
="
italics
"/>
K
<
emph
type
="
italics
"/>
L. quare punctum H
<
emph.end
type
="
italics
"/>
parallelogrammi AD
<
emph
type
="
italics
"/>
cen
<
lb
/>
trum grauitatis existit. </
s
>
<
s
id
="
N12FD3
">Verùm in puncio H diametri parallelogram
<
lb
/>
mi concurrunt.
<
emph.end
type
="
italics
"/>
ductis enim lineis AH HB CH HD; quoniam
<
lb
/>
lineæ AE EB EF FD inter ſe ſunt ęquales. </
s
>
<
s
id
="
N12FDC
">ſimiliter quo〈que〉
<
lb
/>
AK KC BL LD inter ſe ęquales; erit EH ipſi HF ęqua
<
lb
/>
lis, cùm ſint ipſis BL LD ęquales. </
s
>
<
s
id
="
N12FE2
">duæ igitur AE EH dua
<
lb
/>
<
arrow.to.target
n
="
marg86
"/>
bus DF FH ſunt æquales, & angulus AEH angulo DFH
<
lb
/>
<
arrow.to.target
n
="
marg87
"/>
ęqualis; erit triangulum AEH triangulo DFH ęquale. </
s
>
<
s
id
="
N12FF0
">ac
<
lb
/>
propterea angulus EHA angulo FHD æqualis. </
s
>
<
s
id
="
N12FF4
">cùm igitur
<
lb
/>
ſit EHF recta linea, eruntangnli EHA FHD adverticem,
<
lb
/>
& obid AHD recta exiſtit linea. </
s
>
<
s
id
="
N12FFA
">ac per conſe〈que〉ns diame
<
lb
/>
ter parallelogrammi AD. pariquè ratione oſtendetur BHC
<
lb
/>
rectam eſſe lineam. </
s
>
<
s
id
="
N13000
">ex quibus patet in puncto H
<
expan
abbr
="
vtrã〈que〉
">vtran〈que〉</
expan
>
dia
<
lb
/>
metrum conuenire. </
s
>
<
s
id
="
N13008
">centrum igitur grauitatis parallelogram
<
lb
/>
mi AD eſt
<
expan
abbr
="
pũctum
">punctum</
expan
>
, in quo diametri concurrunt.
<
emph
type
="
italics
"/>
Quare demon
<
lb
/>
stratumeſt, quod propoſitum fuit.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
</
chap
>
</
body
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</
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>
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archimedes
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