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

Table of contents

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[111.] Notæ in Propoſit. LXXII.
[112.] SECTIO DECIMAQVARTA Continens Propoſ. LXXIII. LXXIV. LXXV. LXXVI. & LXXVII. PROPOSITIO LXXIII.
[113.] PROPOSITO LXXIV.
[114.] PROPOSITO LXXV.
[115.] PROPOSITIO LXXVI.
[116.] PROPOSITIO LXXVII.
[117.] Notæ in Propoſit. LXXIII.
[118.] LEMMA XII.
[119.] Notæ in Propoſ. LXXIV.
[120.] Notæ in Propoſit. LXXV.
[121.] Notæ in Propoſ. LXXVI.
[122.] Notæ in Propoſit. LXXVII.
[123.] COROLLARIVM.
[124.] SECTIO DECIMAQVINTA Continens Propoſ. XXXXI. XXXXII. XXXXIII. Apollonij. PROPOSITIO XXXXI.
[125.] PROPOSITO XXXXII.
[126.] PROPOSITIO XXXXIII.
[127.] Notæ in Propoſ. XXXXI.
[128.] Notæ in Propoſ. XXXXII.
[129.] Notæ in Propoſit. XXXXIII.
[130.] SECTIO DECIMASEXTA Continens XVI. XVII. XVIII. Propoſ. Apollonij.
[131.] Notæ in Propoſit. XVI. XVII. XVIII.
[132.] SECTIO DECIMASEPTIMA Continens XIX. XX. XXI. XXII. XXIII. XXIV. & XXV. Propoſ. Apollonij. PROPOSITIO XIX.
[133.] PROPOSITIO XX. XXI. & XXII.
[134.] PROPOSITIO XXIII. & XXIV.
[135.] PROPOSITIO XXV.
[136.] Notæ in Propoſit. XIX.
[137.] Notæ in Propoſit. XX. XXI. XXII.
[138.] Notæ in Propoſ. XXIII. XXIV.
[139.] Notæ in Propoſ. XXXV.
[140.] SECTIO DECIMAOCTAVA Continens XXXII. XXXIII. XXXIV. XXXV. XXXVI. XXXVII. XXXVIII. XXXIX. XXXX. XXXXVII. XXXXVIII. Propoſit. Apollonij. PROPOSITIO XXXII.
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10870Apollonij Pergæi
SECTIO VNDECIMA
Continens Propoſ. LXVIII. LXIX. LXX.
& LXXI. Apollonij.
PROPOSITIO LXVIII. LXIX.
SI occurrant duæ tangentes alicui ſectioni A B C, vt ſunt A
11a F, E F, vtique quod abſcinditur ex tangente proximiori
vertici ſectionis, qui eſt B minus eſt ſegmento abſciſſo ex alia,
nempe E F minor eſt, quàm A F.
Iuncta enim A E,
22b88[Figure 88]&
in parabola ex F
producta linea F I
parallela axi B D e-
rit illa diameter, bi-
fariam ſecans E A in
G (34.
ex 2.) Simi-
3330. lib. 2. liter ex centro H pro-
ducamus H F G, quæ
eſt quoque diameter
(34.
ex 2.) bifariam
44Ibidem. ſecans E A in G, &

ducamus A D in pa-
rabola, &
hyperbola perpendicularem ſuper axim D B. Ergo angulus
A I G in parabola eſt rectus, &
in hyperbola obtuſus; ergo F G A erit
obtuſus in illis omnibus;
quare maior eſt, quàm angulus F G E, & A
G æqualis eſt ipſi G E, &
F G communis; igitur E F minor eſt, quàm
F A.
89[Figure 89]

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