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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[381.] Notæ in Propoſit. XV.
[382.] PROPOSITIO XVI.
[383.] PROPOSITIO XVII.
[384.] FINIS.
[385.] Illuſtriſſime, ac Reuerendiſs, Dom.
[386.] Reuerendiſs. Pater Domine.
[387.] REGISTRVM.
[388.] Errata in figuris.
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page |< < (347) of 458 > >|
386347Conicor. Lib. VII.
PROPOSITIO XXXXVIII.
S It iam duplum quadrati A C maius quadrato C A F, erit duplum
quadrati A H maius quadrato G H:
ponatur duplum quadrati H M
æquale quadrato G H:
& ducatur ad axim perpendicularis M N; iun-
456[Figure 456] gaturque A N, eiuſque diameter P Q extendatur, erit H M ad M G,
vt P Q ad P R (7.
ex 7.) ; ergo, & quadratum H M ad quadratum H
G erit, vt quadratum P Q ad quadratum P R, &
quadratum H M ad
duo quadrata ex H M, &
ex M G eandem proportionẽ habebit, quàm
quadratum P Q ad quadratum diametri ſuæ figuræ:
educatur poſtea dia-
meter I L inter A, &
B, & erectum illius ſit I K ad quàm ordinatim
ducta ſit A B, &
ad axim perpendicularis ſit B E erit quadratum M H,
nec non G H in H D æquale dimidio quadrati H G;
igitur G H ad

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