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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[101.] PROPOSITIO LXXII.
[102.] MONITVM.
[103.] LEMMA IX.
[104.] LEMMA X.
[105.] LEMMA XI.
[106.] Notæ in Propoſ. LXIV. & LXV.
[107.] Notæ in Propoſ. LXVI.
[108.] Ex demonſtratione præmiſſa propoſitionum 64. & 65. deduci poteſt conſectarium, à quo notæ ſubſe-quentes breuiores reddantur. COROLLARIVM PROPOSIT. LXIV. & LXV.
[109.] Notæ in Propoſ. LXVII.
[110.] COROLLARIVM PROPOSIT. LXVII.
[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.
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10264Apollonij Pergæi
Notæ in Propoſit. LIX. LXII. & LXIII.
E T lineis, atque ſignis eodem ſtatu manentibus, & c. Ideſt punctum
11a C extra, aut intra ſectionem ponatur, dummodo non ſit in axi, ducaturq;
C E perpendicularis ad axim, ſecans eum in E, & vt latus tranſuerſum ad re-
ctum, ita ſiat D F ad F E, atque C L ad L E, &
per L producatur O L M pa-
rallela A I, &
per F ducatur F M G parallela C E, quæ ſecet O M in M, & per
C deſcribatur hyperbole H C B circa aſymptotos G M O, quæ in ellipſi per eius
224. lib. 2. centrum D tranſibit, &
ideo eam ſecabit ſicuti oſtenſum eſt in 56. huius.
81[Figure 81]
Eo quod O M parallela axi D A inclinato ſubtendit, & c. Quoniam
33b in hyperbola O M parallela axi ſecat vtrãque linearum continentium angulum,
qui deinceps eſt ei, qui hyperbolen continet ſectioni occurret, &
producta ſectio-
4411. lib. 2. nem A B ſecabit, &
ideo O M cadit intra ſectionem A B, atque hyperbole A B
producta ſemper magis, ac magis recedit tum ab M O parallela axi, cum ab M
G parallela tangenti verticali, &
ſectio H C B, & asymptoti O M G ad ſe ip-
5514. lib. 2. ſas jemper propius accedunt, igitur ſectiones A B, B C conueniunt;
ſecent ſe
ſe in B, &
ducamus per B, C lineam occurrentem axi in I, ipſi M O in O, &
M G in G.
Et quia B O æqualis eſt ipſi C G, & c. Cum lineæ rectæ O M, O G ſe ſe-
66c cantes in O, ſecentur à parallelis E C, K B, F G proportionaliter, erit O N
æqualis M L, ſicuti O B æqualis erat C G, &
O L, æqualis erit N M, ſicuti
O C æqualis erat B G, cumque triangula O C L, &
I C E ſint ſimilia propter
778. lib. 2. parallelas O L, I E, erit O L ad E I, vt L C ad C E;
eſt vero M N, ſeu F
K æqualis ipſi L O, igitur F K ad E I eſt, vt L C ad E C, ſed ex conſtru-
ctione erat D F ad F E, vt C L ad L E, ſciluet vt latus tranſuerſum ad
rectum;
ergo antecedentes ad ſummas terminorum in hyperbola, & ad
88Lem. 1.

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