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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[151.] Notæ in Propoſit. XXXIII. XXXIV.
[152.] Notæ in Propoſit. XXXV.
[153.] Notæ in Prop. XXXVI.
[154.] Notæ in Prop. XXXVIII.
[155.] Notæ in Propoſit. XXXIX.
[156.] Notæ in Propoſit. XXXXVIII.
[157.] LIBRI QVINTI FINIS.
[158.] APOLLONII PERGAEI CONICORVM LIB VI. DEFINITIONES. I.
[159.] II.
[160.] III.
[161.] IV.
[163.] VI.
[164.] VII.
[165.] VIII.
[166.] IX.
[167.] NOTÆ.
[168.] MONITVM.
[169.] SECTIO PRIMA Continens Propoſit. I. II. IV. & X. PROPOSITIO I.
[170.] PROPOSITIO II.
[171.] PROPOSITIO IV.
[172.] PROPOSITIO X.
[173.] Notæ in Propoſit. I.
[174.] Notæ in Propoſit. II.
[175.] Notæ in Propoſit. IV.
[176.] Notæ in Propoſit. X.
[177.] SECTIO SECVNDA Continens Propoſit. III. VI. VII. & IX. PROPOSITIO III.
[178.] PROPOSITIO VI.
[179.] PROPOSITIO VII.
[180.] PROPOSITIO IX.
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278240Apollonij Pergæi323[Figure 323] ad Z b, & ad Z a eſt eadem; & propterea Z b æqualis eſt Z a, quod eſt
abſurdum.
Ponamus iam quadratum F G ad G H in G I maiorem proportionem
habere, quàm D B ad B E.
Dico in cono H F I exhiberi non poſſe ſe-
ctionem æqualem hyperbolæ A B.
Si enim exhiberi poſſet illius axi ali-
qua parallela reperiretur vt F N:
& quadratum F N ad I N in N H ma-
iorem proportionem habens, quàm quadratum F G ad quadratum G H,
erit vt D B ad B E;
quæ minor eſt proportione quadrati F G ad qua-
dratum G H:
quod eſt abſurdum. Non ergo reperitur in cono H F I ſe-
ctio æqualis hyperbolæ A B.
Et hoc erat oſtendendum.
PROPOSITIO XXVIII.
SIt iam ſectio elliptica A B, cuius axis tranſuerſus B D, &
erectus illius B E, &
circa coni triangulum H F I deſcri-
11a324[Figure 324]

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