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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[341.] Notæ in Propoſit. XXXXX.
[342.] Notæ in Propoſit. XXXXXI.
[343.] SECTIO VNDECIMA Continens Propoſit. XXXII. & XXXI. Apollonij.
[344.] Notæ in Propoſit. XXXI. & XXXII.
[345.] LIBRI SEPTIMI FINIS.
[346.] LIBER ASSVMPTORVM INTERPRETE THEBIT BEN-KORA EXPONENTE AL MOCHT ASSO Ex Codice Arabico manuſcripto SERENISS. MAGNI DV CIS ETRVRIÆ, ABRAHAMVS ECCHELLENSIS Latinè vertit. IO: ALFONSVS BORELLVS Notis Illuſtrauit.
[347.] Præfatio ad Lectorem.
[348.] MISERICORDIS MISERATORIS CVIVS OPEM IMPLORAMVS. LIBER ASSVMPTORVM ARCHIMEDIS, INTERPRETE THEBIT BEN-KORA, Et exponente Doctore ALMOCHTASSO ABILHASAN, Halì Ben-Ahmad Noſuenſi. PROPOSITIONES SEXDECIM.
[349.] PROPOSITIO I.
[350.] SCHOLIVM ALMOCHTASSO.
[351.] Notæ in Propoſit. I.
[352.] PROPOSITIO II.
[353.] SCHOLIVM ALMOCHTASSO.
[354.] Notæ in Propoſ. II.
[355.] PROPOSITIO III.
[356.] Notæ in Propoſit. III.
[357.] PROPOSITIO IV.
[358.] Notæ in Propoſit. IV.
[359.] PROPOSITIO V.
[360.] SCHOLIVM ALMOCHTASSO.
[361.] SCHOLIVM PRIMVM ALKAVHI.
[362.] SCHOLIVM SECVNDVM ALKAVHI.
[363.] Notæ in Propoſit. V.
[364.] PROPOSITIO VI.
[365.] Notæ in Propoſit. VI.
[366.] PROPOSITIO VII.
[367.] SCHOLIVM ALMOCHTASSO.
[368.] PROPOSITIO VIII.
[369.] SCHOLIVM ALMOCHTASSO.
[370.] Notæ in Propoſit. VIII.
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page |< < (398) of 458 > >|
437398Archimedis ſuper oſtendit perpendicularem E O æqualem eſſe circuli diametro E F. Itaque
in quadrato ſpatio E O P F, circuli diameter E F, ſiue O P media proportio-
nalis erit inter A O, &
P C. Zuam ergo proportionem habent tres continuè
proportionales in eadem ratione A D ad D C ſimul ſumptæ ad illarum inter-
504[Figure 504] mediam, eandem habebit diameter maioris ſemicirculi A C ad O P, ſiue E F.
Zuæ deinde Pappus demonſtrat perpendiculares à centris circulorum in collate-
ralibus ſpatijs prædicti Arbeli exiſtentium eſſe multiplices diametrorum eorum
circulorum à quibus educuntur ſecundum ſeriem natur alem numerorum ab vni-
tate creſcentium, proprietas quidem eſt admirabilis, de qua in hac propoſitio-
ne Archimedis altum ſilentium, quod forte temporum iniuriæ tribuendum
eſt.
Poſſent in hiſce duabus propoſitionibus non pauca problemata ſuperaddi, quo-
modo nimirum in prædicto ſpatio à tribus ſemicirculis comprehenſo circuli in-
numerabiles deſcribi debeant, &
alia quamplurima facilia, quæ lectorum ſa-
gacitati relinquuntur.
PROPOSITIO VII.
SI circulus circa quadratum deſcriptus fuerit, & alius intra
illum, vtique erit circumſcriptus duplus inſcripti.
Sit itaque circulus compre-
505[Figure 505] hendens quadratum A B, cir-
culus A B, &
inſcriptus C D,
&
ſit diameter quadrati A B, &
eſt diameter circuli circumſcri-
pti, &
educamus C D diame-
trum circuli inſcripti parallelam
ipſi A E, quæ eſt ei æqualis.
Et quia quadratum A B duplum
eſt quadrati A E, ſiue D C, &

proportio quadratorum ex

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