Commandino, Federico
,
Liber de centro gravitatis solidorum
,
1565
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xlink:href
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023/01/038.jpg
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id
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xlink:href
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<
lb
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linea x cum ſit minor circulo, uel ellipſi, eſt etiam minor fi
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lb
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gura rectilinea y. </
s
>
<
s
id
="
s.000357
">ergo pyramis x pyramide y minor erit. </
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>
<
lb
/>
<
s
id
="
s.000358
">Sed & maior; quod fieri
<
expan
abbr
="
nõ
">non</
expan
>
poteſt. </
s
>
<
s
id
="
s.000359
">At ſi conus, uel coni por
<
lb
/>
tio x ponatur minor pyramide y: ſit alter conus æque al
<
lb
/>
tus, uel altera coni portio X ipſi pyramidi y æqualis. </
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>
<
s
id
="
s.000360
">erit
<
lb
/>
eius baſis circulus, uel ellipſis maior circulo, uel ellipſi x,
<
lb
/>
quorum exceſſus ſit ſpacium
<
foreign
lang
="
grc
">ω.</
foreign
>
Si igitur in circulo, uel eili
<
lb
/>
pſi X figura rectilinea deſcribatur, ita ut portiones relictæ
<
lb
/>
ſint
<
foreign
lang
="
grc
">ω</
foreign
>
ſpacio minores, ciuſmodi figura adhuc maior erit cir
<
lb
/>
culo, uel ellipſi x, hoc eſt figura rectilinea y. </
s
>
<
s
id
="
s.000361
">& pyramis in
<
lb
/>
ca conſtituta minor cono, uel coni portione X, hoc eſt mi
<
lb
/>
nor pyramide y. </
s
>
<
s
id
="
s.000362
">eſt ergo ut X figura rectilinea ad figuram
<
lb
/>
rectilineam y, ita pyramis X ad pyramidem y. </
s
>
<
s
id
="
s.000363
">quare cum
<
lb
/>
figura rectilinea X ſit maior figura y: erit & pyramis X py
<
lb
/>
ramide y maior. </
s
>
<
s
id
="
s.000364
">ſed erat minor; quod rurſus fieri non po
<
lb
/>
teſt. </
s
>
<
s
id
="
s.000365
">non eſt igitur conus, uel coni portio x neque maior,
<
lb
/>
neque minor pyramide y. </
s
>
<
s
id
="
s.000366
">ergo ipſi neceſſario eſt æqualis. </
s
>
<
lb
/>
<
s
id
="
s.000367
">Itaque quoniam ut conus ad conum, uel coni portio ad </
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>
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