Apollonius <Pergaeus>, Apollonii Pergaei Conicorvm Lib. V. VI. VII. paraphraste Abalphato Asphahanensi : nunc primum editi ; additvs in calce Archimedis assvmptorvm liber, ex codibvs arabicis mss Abrahamus Ecchellensis Maronita latinos reddidit, Jo. Alfonsvs Borellvs curam in geometricis versione contulit & [et] notas vberiores in vniuersum opus adiecit

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230192Apollonij Pergæi huius) atque A N pa-
259[Figure 259] rallela erit L O.
Edu-
catur iam R Q bifariã
diuidens A E, L M in
P, Q:
quare erit diame
1128. lib. 2. ter ſectionis (32.
ex 2.)
& educatur R V paral-
lela A N, quæ ſectionẽ
2217. lib. 1. continget (18.
ex 1.) .
Et quia duo ſegmen-
ta L M, A E ſunt ſi-
milia habebit maior
3316. 17.
huius.
Q R ad eandem R V
eandem proportionẽ,
quàm habet minor R
P;
quod eſt abſurdum.
Quare non ſunt ſimilia
duo ſegmenta A E, C
F alteri ſegmento.

Quod erat oſtenden-
dum.
Notæ in Propoſit. XVIII. & XIX.
QVuoniam vnumquodque corum alteri congruit, nec non congruunt
duo ſegmenta G I, K H in ellipſi (7.
8. ex 6.) at non ſunt ſimilia
44a alteri ſegmento, &
c. Ideſt. Sit prius ſectio A B C parabole, vel
hyperbole.
Quoniam duæ A C, & E F ordinatim ad axim B D applicatæ ab-
557. huius. ſcindunt ex vtraque parte axis duo ſegmen-
260[Figure 260] ta A E, &
C F congruentia, propterea ſi-
milia erunt, atque ſimiliter poſita.
Secundo,
in ellipſi ductæ ſint ad axim quatuor ordina-
tim applicatæ, quarum binæ extremæ E F,
&
I K æqualiter à centro D diſtent; pari-
terque binæ intermediæ A C, &
G H æqua-
668. huius. liter diſtent ab eodem centro:
quare quatuor
ſegmenta G I, H K, C F, &
A E æqualia
erunt, &
ſibi mutuo congruent, & propterea
ſimilid quoque inter ſe erunt.
Erit angulus N æqualis O, vti demõ-
77b ſtrauimus, &
c. Quoniam duo ſegmenta L
M, &
A E, ponuntur ſimilia, atque eorum
baſes L M, &
A E productæ occurrunt axi
in O, &
N: igitur vt demonſtratum eſt,
88Prop 16.
17. huius.
anguli à contingentibus verticalibus ſegmen-
torum ſimilium L M, &
A E cum axi com-
muni B D eiuſdem ſectionis continebunt

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