Full text: Angeli, Stefano: Miscellaneum Hyperbolicum et Parabolicum

32. SCHOLIVM.

Proportionem prædicti cylindri ad illud ſegmen-
tum hyperbolicum, etiam duobus alijs modis, con-
ſequenter ad ſuperius dicta, liceret colligere. Cum
enim tale ſegmentum conſter ex ſegmento coniſibi
inſcripto, & ex exceſſu ſupra ipſum; & cum talis ex-
ceſſus ſit æqualis exceſſui ſegmenti conoidis para-
bolici ſupra ſuum ſegmentum conicum; & cum ex
dictis in ijs, quæ de infinitis parabolis conſcripſi-
mus, facile liceat colligere rationem L C, & ad ſeg-
mentum conicum A P Q C, & ad exceſlum ſegmen-
ti conoidis parabolici ENOF, ſupra ſegmentum
conicum E R S F: ſequitur facile etiam nos obtine-
re rationem LC, ad ſegmentum AHIC. Pari-
ter ſi in ſchemat. propoſit. 10. tam ſegmento v. g. A Q T C, quam ſegmento exceſſus fruſti conici
G N P H, ſupra cylindrum R M, mente concipia-
mus circumſcribi cylindros; patet ex dictis in eadem
propoſitione, tubum cylindricum cuius baſis armil-
la circularis G L H, altitudo OD, æqualem eſſe
cylindro circumſcripto ſegmento A Q T C. Pari-
terque patet exceſſum fruſti G N P H, ſupra cylin-
drum R M, æqualem eſſe ſegmento A Q T C. Cum
ergo ex dictis in opere ſupra citato, faciliſſime
poſſimus habere rationem prædicti tubi ad illum ex-
ceſſum ſupra cylindrum; faciliter etiam habebimus
rationem cylindri circum ſcripti ſegmento hyperbo-

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