PROPOSITIO XXVI.
Sit in circulo erecto, a puncto inferiori ducan
tur plana ad puncta peripheriae, & a dictis
punctis descendant gravia super dicta pla
na eodem tempore quo a puncto supremo
descendit aliud grave perpendiculariter;
pervenient omnia eodem instanti ad di
ctum punctum inferius.
27[Figure 27]
tur plana ad puncta peripheriae, & a dictis
punctis descendant gravia super dicta pla
na eodem tempore quo a puncto supremo
descendit aliud grave perpendiculariter;
pervenient omnia eodem instanti ad di
ctum punctum inferius.
![](https://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler?fn=/permanent/archimedes/balia_demot_064_la_1646/064-01-figures/064.01.047.1.jpg&dw=200&dh=200)
Sit circulus cuius diameter ABC erectus super
plano orizontali, quod tangat in C, & a C
ducantur plana CD, CE, & a punctis, E, D
gravia descendant super dicta plana, nec non,
& a puncto supremo A perpendiculariter.
plano orizontali, quod tangat in C, & a C
ducantur plana CD, CE, & a punctis, E, D
gravia descendant super dicta plana, nec non,
& a puncto supremo A perpendiculariter.
Dico quod eodem tempore perveniunt in C.
A puncto A ducantur AF, AG paralellae ipsis
CE, CD, & ducantur AF, FC.
CE, CD, & ducantur AF, FC.
Quoniam in triangulis AEC, AFC anguli al
terni FAC, ACE sint aequales,, & anguli
terni FAC, ACE sint aequales,, & anguli