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

Table of figures

< >
[Figure 231]
[Figure 232]
[Figure 233]
[Figure 234]
[Figure 235]
[Figure 236]
[Figure 237]
[Figure 238]
[Figure 239]
[Figure 240]
[Figure 241]
[Figure 242]
[Figure 243]
[Figure 244]
[Figure 245]
[Figure 246]
[Figure 247]
[Figure 248]
[Figure 249]
[Figure 250]
[Figure 251]
[Figure 252]
[Figure 253]
[Figure 254]
[Figure 255]
[Figure 256]
[Figure 257]
[Figure 258]
[Figure 259]
[Figure 260]
< >
page |< < (193) of 458 > >|
231193Conicor. Lib. VI. gulos æquales; ij verò anguli æquales ſunt angulis O, & N, cum baſes L M, &
A E parallelæ ſint contingentibus verticalibus eorundem ſegmentorum;
igitur an-
guli L O B, &
A N B æquales ſunt inter ſe; & propterea duorum ſegmentorũ
baſes L M, &
A E parallelæ ſunt inter ſe.
SECTIO OCTAVA
Continens Propoſit. XX. & XXI.
Apollonij.
PROPOSITIO XX.
SI in quibuslibet ſimilibus coniſectionibus A B C, & D E F
11a ductæ fuerint ad axes B O, E Q ordinatim applicatæ A C,
D F, N L, P M, quarum illæ, quæ ad eaſdem partes verticum
B, &
E ducuntur efficiant abſciſſas erectis proportionales, ſci-
licet I B ad B G ſit, vt K E ad E H, nec non L B ad B G, vt
M E ad E H:
Dico ſegmenta facta ab ordinatis ſimiliter poſi-
tis eſſe inter ſe ſimilia, ac ſimiliter poſita, ſcilicet N A ipſi P D,
atque A B ipſi D E, nec non N B ipſi P E.
261[Figure 261]
Sintque primò ſectiones parabolæ; & educamus N A ad B L in O, &
22b P D ad M E in Q.
Et quia G B ad B I eſt, vt H E ad E K, & B L ad
B G eſt vt M E ad E H;
ergo L B ad B I, nempe L N ad I A potentia
(19.
ex 1.) nempe L N ad O I eandem proportionem habet, quàm M E
3320. lib. 1.

Text layer

  • Dictionary

Text normalization

  • Original

Search


  • Exact
  • All forms
  • Fulltext index
  • Morphological index