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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5012Apollonij Pergæi I C cum exemplari N T, & quadratum I L æquale eſt quadrato eiuſdem I C cum
exemplari
Q Z.
Ergò exceſſus quadrati I A ſupra quadratum I L æqualis eſt
differentiæ
exemplarium N T, &
Q Z. Poſteà ducatur recta Q N: quia trian-
gula
Q N S, O N Q.
æqualia ſunt triangulo, cuius baſis æqualis eſt ſummæ re-
ctarum
N S, &
O Q.
altitudo verò V R, vel
19[Figure 19] M E, ſuntque illa duo
triãgula
æqualia tra-
pezio
N O Q ſiue-
exceſſui
trianguli N
H
S, ſupra triangu-
lum
H O Q:
ergo triã-
gulum
cuius baſis æ-
quatur
ſumme ipſa-
rum
N S, O Q alti-
tudo
verò E M, æqua-
le
eſt differentiæ triã-
gulorum
N H S, O H
Q
.
Et ſimiliter eorum dupla, ſcilicet rectangulum, cuius baſis æqualis eſt ſum-
N S, O Q altitudo verò æqualis M E, erit differentia exemplarium rectã-
gulorum
N T, &
Q Z; ſed ſumma altitudinum V H, H R, ſeu ſumma abſciſ-
ſarum
C M, C E ad ſum mam baſium N S, O Q eandem proportionem habet,
quam
vna H V ad vnam O Q, ſeu quam latus tranſuerſum D C ad ſummam-
in
hyperbola, &
ad differentiam in ellipſi laterum tranſuerſi D C, & recti C F:
Igitur differentia exemplar ium N T, Q Z, ſeu exceſſus quadrati I A ſupra-
quadratum
I L æqualis eſt rectangulo contento ſub E M differentia abſciſſarum,
&
ſub ſumma ipſarum N S, & O Q, ad quam ſumma abſcißarum eandem pro-
portionem
habet, quam latus tranſuerſum ad ſummam in hyperbola, &
ad dif-
ferentiam
in ellipſi laterum tranſuerſi, &
recti, quod fuerat propoſitum.

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