Valerio, Luca, De centro gravitatis solidorum, 1604

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1uerſum latus EB. & poſitis in ipſa, BD duobus pun­
ctis
quibuslibet GH, ordinatim applicentur MG, NH:
& circa diametrum BD ſit deſcripta parabola KBL tali­
ter
vt ipſius dimidiæ baſis DK quadratum ad reliquum
quadrati
AD, ſit vt EB ad BD, & rectas MH, NG
in
infinitum productas ſecet parabola KBL in punctis
OP
.
Dico puncta OP intra hyperbolem cadere: & reli­
quum
quadrati MG dempto quadrato GO ad reliquum
quadrati
NH dempto quadrato PH, eſſe vt quadratum
BG
ad quadratum
BH
.
Quoniam enim
ponitur
vt EB ad B
D
, hoc eſt vt rectan­
gulum
EBD ad qua­
dratum
BD, ita qua­
dratum
DK ad reli­
quum
quadrati AD,
erit
componendo, &
conueniendo
, vt rectam
gulum
BDE ad re­
ctangulum
EBD, ita
quadratum
AD ad
quadratum
DK: ſed
vt
rectangulum BGE
ad
rectangulum BDE,
190[Figure 190]
ita
eſt quadratum MG ad quadratum AD; ex æquali
igitur
, vt rectangulum BGE ad rectangulum EBD, ita
eſt
quadratum MG ad quadratum DK: ſed vt rectan­
gulum
EBD ad rectangulum EBG, ita eſt quadratum
DK
ad GO quadratum; ex æquali igitur vt rectangu­
lu
m BGE ad rectangulum EBG, ita erit quadratum
MG
ad quadratum GO: ſed rectangulum BGE maius
eſt
totum parte rectangulo EBG; quadratum igitur MG
quadrato
GO maius erit, & recta MG maior quàm

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