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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251213Conicor. Lib. VI. H O cadent puncta T, & V infra centrum L; & P vlterius tendit quàm Q ad
partes
, eiuſdem centri L.
igitur in tali caſit quatuor æquidiſtantium duæ P E,
11Def. add. T X vlterius tendent ad partes centri, &
asymptoti L M, quàm duæ aliæ æqui-
diſtantes
Q F, V Z.
Quando verò B E, & C F cadunt vltra centra H, &
L
in productionibus æquidiſtantium asymptotorum G H, K L:
quia N P cadit
290[Figure 290] ſupra, &
L f infra centrũ H, ergo in parallelogrammo P f recta N f, ſeu ei æ-
qualis
L P maior erit quàm N H:
facta autem fuit L T æqualis H N; igitur
L
T minor eſt, quàm L P;
Eadem ratione L V minor erit, quàm L Q, at-
que
P vlterius tendit quàm Q ad partes centri L, &
ab ijſdem punctis caden-
tibus
ſupra centrum L in productione asymptoti K L ducuntur quatuor rectæ
lineæ
inter ſe æquidiſtantes vſque ad hyperbolen D Z;
igitur duæ P E, T X vl-
22Ibidem. terius tendunt ad partes centri, vel asymptoti L M, quàm duæ Q F, V Z.
Secetur poſtea P a æqualis N B, atque Q b æqualis O C. Et quia T X æqua-
lis
oſtenſa fuit N B erit P a æqualis ipſi T X;
eſtque P E maior quàm T X;
33Coroll.
Propoſ
. 2.
addit
.
propterea quod illa vlterius tendit ad partes cẽtri L, quàm T X;
igitur P E ma-
ior
erit, quàm P a, &
earum differentia erit E a. Simili modo oſtendetur Q
b
æqualis V Z, &
minor quàm Q F, quarum differentia F b: cumque Q P
æqualis
ſit ipſi N O, propterea quod ſunt latera oppoſita eiuſdem parallelogram-
mi
;
igitur T V, quæ oſtenſa fuit æqualis O N erit quoque æqualis Q P, & sũ-
pta
communiter Q T erit Q V æqualis T P, atque à terminis æqualium ſeg-
mentorum
eiuſdem asymptoti L K ducuntur vſque ad hyperbolen E Z quatuor
rectæ
lineæ inter ſe æquidiſtantes, &
earum binæ P E, T X vlterius tendunt
ad
partes centri, &
asymptoti L M, quàm binæ Q F, V Z; igitur differentia
44Propoſ. 2.
addit
.
priorum, ſcilicet E a maior erit poſteriorum differentia F b;
eſtque B a æqua-
lis
N P, propterea quod æqualibus N B, &
P a ponitur communiter B P; pa-
riterque
O Q æqualis eſt C b;
ſuntque N P, & O Q æquales inter ſe, nempe
latera
oppoſita eiuſdem parallelogrammi;
igitur B a, & C b æquales ſunt inter
ſe
:
ijs verò adduntur exceßus inæquales E a, F b efficietur E B vlterius ten-
dens
ad partes asymptoti H I maior, quàm F C.
Quod erat primum.

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