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# Title: Qua Continentur De Angulo Contactus & Semicirculi, Disquisitio Geometrica. De Sectionibus Conicis Tractatus. Arithmetica Infinitorum: sive de Curvilineorum quadraturâ, &c. Eclipseos Solaris Observatio (shelfmark Leibn. Marg. 84:2)
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LOF. 7.
guae isitur ex contrasta pasce Piclu OpPonto crurin
ulpla verticet conmao eculicus pulana a
De Sectiovibus Conicis.
1
nam 
Punctum autem A, coni-Sectionis Pertex dicitur; 
quidem A, a, (in EllipE_ Hyperbola) Vertices oppositis
RectXeq; AP, AE, AI, conisectionum Diamerri, (nem-
DeAP ParabOla, AE. EIlipsis, AHI FyPerbOl_e:) iplag;
Aa (Ellipleos vel Ayerbolarum) Diameter transversa:
(idem nempeplanum quod Hrperbolam in uno ali-
quo cono efficit, cum etiam ad Oppolicum Conum
perrinset, Oppositam Fyperbolam ibidem efticit.) Rectam
autem OO, reliquasqi ipa in eadem C on-sectione
Parallelas