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 contents

< >
[191.] PROPOSITIO XII.
Page: 193 (155)
[192.] PROPOSITIO XIII.
Page: 194 (156)
[193.] PROPOSITIO XIV.
Page: 195 (157)
[194.] MONITVM.
Page: 196 (158)
[195.] LEMMA II.
Page: 196 (158)
[196.] COROLLARIVM.
Page: 197 (159)
[197.] LEMMA III.
Page: 197 (159)
[198.] LEMMA IV.
Page: 198 (160)
[199.] COROLLARIVM.
Page: 198 (160)
[200.] LEMMAV.
Page: 199 (161)
[201.] COROLLARIVM I.
Page: 199 (161)
[202.] COROLLARIVM II.
Page: 199 (161)
[203.] Notæ in Propoſit. XI.
Page: 203 (165)
[204.] Notæ in Propoſit. XII.
Page: 204 (166)
[205.] Notæ in Propoſit. XIII.
Page: 205 (167)
[206.] Notæ in Propoſit. XIV.
Page: 206 (168)
[207.] SECTIO QVINTA Continens ſex Propoſitiones Præmiſſas, PROPOSITIO I. II. III. IV. & V.
Page: 206 (168)
[208.] PROPOSITIO Præmiſſa VI.
Page: 209 (171)
[209.] Notæ in Propoſit. Præmiſſas I. II. III. IV. & V.
Page: 209 (171)
[210.] Notæ in Propoſit. Præmiſſ. VI.
Page: 212 (174)
[211.] SECTIO SEXTA Continens Propoſit. XV. XVI. & XVII. PROPOSITIO XV.
Page: 213 (175)
[212.] PROPOSITIO XVI.
Page: 215 (177)
[213.] PROPOSITIO XVII.
Page: 216 (178)
[214.] Notæ in Propoſit. XV.
Page: 219 (181)
[215.] MONITVM.
Page: 221 (183)
[216.] LEMMA VI.
Page: 221 (183)
[217.] LEMMA VII.
Page: 222 (184)
[218.] LEMMA VIII.
Page: 224 (186)
[219.] Notæ in Propoſit. XVI.
Page: 225 (187)
[220.] Notæ in Propoſit. XVII.
Page: 226 (188)
< >
page |< < (128) of 458 > >|
166128Apollonij Pergæi
PR OPOSITIO XXXIX.
IN ſectione A B elliptica quælibet
162[Figure 162] perpendicularis F D ad lineam
maximam C D, ab eius termino D
in ſectione poſito educta, continget
coniſectionem.
Alioquin ſecet illam, & in eius produ-
ctione D G ſumatur punctum G intra ſe-
11a ctionem: & educamus B G C, igitur G
C maior eſt, quàm C D, quia ſubtendit
rectum angulum C D G, & propterea B C multo maior eſt, quàm C D,
quod eſt abſurdum; igitur educta illa linea eſt tangens; quod erat oſten-
dendum.
PROPOSITIO XXXX.
E Contra ſi fuerit F D tangens, erit perpendicularis ſuper
maximam D C.
Alioquin educamus aliam E D perpendicularem ſuper illam; ergo E
D tangit ſectionem in puncto D (39. ex 5.) ſed F D ſuppoſita fuit tan-
gens; igitur duæ D F, & D E tangunt ſectionem in vno puncto, quod
eſt abſurdum (36. ex I.)
PROPOSITIO XXXXVII.
Q Vælibet linea D E ex puncto
163[Figure 163] contactus D ad axim alicuius
ſectionis A B educta per-
pendicularis ad tangentem D C,
erit linea breuiſſima, aut maxima.
Alioquin educamus D F breuiſſimam,
22Ex 10. & 20. huius. vel maximam; ergo D C perpendicularis
eſt ſuper D F; ſed C D ſuppoſita fuit per-
3340. huius. pendicularis ſuper D E; quod eſt abſur-
dum: quapropter demonſtratũ eſt, quod
fuerat propoſitum.

Text layer

  • Dictionary

Text normalization

  • Original
  • Regularized
  • Normalized

Search


  • Exact
  • All forms
  • Fulltext index
  • Morphological index
Impressum