Angeli, Stefano degli, Miscellaneum hyperbolicum et parabolicum : in quo praecipue agitur de centris grauitatis hyperbolae, partium eiusdem, atque nonnullorum solidorum, de quibus nunquam geometria locuta est, parabola nouiter quadratur dupliciter, ducuntur infinitarum parabolarum tangentes, assignantur maxima inscriptibilia, minimaque circumscriptibilia infinitis parabolis, conoidibus ac semifusis parabolicis aliaque geometrica noua exponuntur scitu digna

Table of handwritten notes

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21420289[Figure 89] dat numerum parabolæ binario. V. g. in prima pa-
rabola, nempein triangulo vt A D, ad tertiam pro-
portionalem.
In quadratica vt duo tertia A D, ad
quartam.
In cubica vt duo quarta, feù dimidium
A D, ad quintam.
Etſic in infinitum. Sit illa vltima
proportionalis A Q.
In prima parabola, nempe in
triangulo res eſt euidens, quia ſicuti triangulum
A B C, eſſet quadruplum trianguli G D H, maximi
ſibi inſcripti, ſic A D, quia A D, eſſet dupla G F,
eſſet quadrupla A Q, tertiæ proportionalis.
In alijs
parabolis nè ſchemata multiplicemus, intelligamus
inſcripta triangula etiam A B C, quorum baſes A C,
diametri D B.
Triangulum A B C, ad

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