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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[131.] Notæ in Propoſit. XVI. XVII. XVIII.
Page: 152 (114)
[132.] SECTIO DECIMASEPTIMA Continens XIX. XX. XXI. XXII. XXIII. XXIV. & XXV. Propoſ. Apollonij. PROPOSITIO XIX.
Page: 154 (116)
[133.] PROPOSITIO XX. XXI. & XXII.
Page: 155 (117)
[134.] PROPOSITIO XXIII. & XXIV.
Page: 156 (118)
[135.] PROPOSITIO XXV.
Page: 157 (119)
[136.] Notæ in Propoſit. XIX.
Page: 157 (119)
[137.] Notæ in Propoſit. XX. XXI. XXII.
Page: 158 (120)
[138.] Notæ in Propoſ. XXIII. XXIV.
Page: 161 (123)
[139.] Notæ in Propoſ. XXXV.
Page: 161 (123)
[140.] SECTIO DECIMAOCTAVA Continens XXXII. XXXIII. XXXIV. XXXV. XXXVI. XXXVII. XXXVIII. XXXIX. XXXX. XXXXVII. XXXXVIII. Propoſit. Apollonij. PROPOSITIO XXXII.
Page: 162 (124)
[141.] PROPOSITIO XXXIII. XXXIV.
Page: 163 (125)
[142.] PROPOSITIO XXXV.
Page: 163 (125)
[143.] PROPOSITIO XXXVI.
Page: 164 (126)
[144.] PROPOSITIO XXXVII. XLVI.
Page: 164 (126)
[145.] PROPOSITIO XXXVIII.
Page: 165 (127)
[146.] PR OPOSITIO XXXIX.
Page: 166 (128)
[147.] PROPOSITIO XXXX.
Page: 166 (128)
[148.] PROPOSITIO XXXXVII.
Page: 166 (128)
[149.] PROPOSITIO XXXXVIII.
Page: 167 (129)
[150.] Notæ in Propoſit. XXXII.
Page: 167 (129)
[151.] Notæ in Propoſit. XXXIII. XXXIV.
Page: 167 (129)
[152.] Notæ in Propoſit. XXXV.
Page: 168 (130)
[153.] Notæ in Prop. XXXVI.
Page: 169 (131)
[154.] Notæ in Prop. XXXVIII.
Page: 169 (131)
[155.] Notæ in Propoſit. XXXIX.
Page: 170 (132)
[156.] Notæ in Propoſit. XXXXVIII.
Page: 170 (132)
[157.] LIBRI QVINTI FINIS.
Page: 170 (132)
[158.] APOLLONII PERGAEI CONICORVM LIB VI. DEFINITIONES. I.
Page: 171 (133)
[159.] II.
Page: 171 (133)
[160.] III.
Page: 171 (133)
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284246Apollonij Pergæi
Notæ in Propoſit. XXVIII.
DEinde ſit ſectio elliptica, vt A B, & axis eius tranſuerſus B D, &
11a erectus illius B E; & ſit triãgulum coni H F I, & circumducamus
circa illum circulum, & educamus ex F lineam F L K occurrentem ipſi
extra circulum in K; & occurrat circulo in L ita vt ſit F K ad K L, vt
D B ad B E; & eſt facile ( vti demonſtrauimus in 59. ex I.) , & c.
331[Figure 331]
Senſus propoſitionis hic erit. In cono recto, cuius triangulum per axim H F I
reperire ſectionem æqualem datæ ellipſi A B, cuius axis tranſuerſus D B, &
latus rectum B E. In conſtructione poſtea duci debet recta linea F L K extra
circulum, & triangulum ad vtraſque partes, alias conſtructio non eſſet perfecta.
Lemma verò, quod repoſuiſſe, dicit Arabicus interpres in I. libro, ab hoc
ſequenti for ſam diuerſum non erit.
LEMMAX.
SEcetur latus F I in S, vt ſit F I
332[Figure 332] ad I S in eadem ratione, quàm
habet axis tranſuerſus D B ad latus re-
ctum B E: & ducatur S L æquidiſtans
trianguli baſi H I, quæ ſecet circulum ex
vtraque parte in L, & coniungantur re-
ctæ lineæ F L, producanturque quoſquè
ſecent baſim H I in punctis K.
Quoniam in triangulo F I K ducitur recta
linea S L æquidiſtans baſi I K, erit F I

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