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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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d 
I. NIDFX
C e PITDNI
I. Ansa  Status praesentis controversta.
HI. Controversiam hanc ab Fuclide diremptam non esse.
III. Anculi Plani natura e definitio explicantur.
IV. Arcumentum primum, ab inclinationis, anguliqu
plani, natura petitum.
V. Arcumentum secundum: ab anculorum Planorum
ouorrcia dependens.
VI. Exceptionibus Clavii respondetur.
VII. Anculorum Planorum ouogirem quatuor areumentis
ulterius confirmatur.
VIII. D. Hlenrici Savilii Testimonium hac inre.
IX. Areumentum tertium; ab aequalibus similium see-
X5.
mentorum angulis desumptum.
similium sesmentorum angulos aequales esse, sex
dreumentis ulterius confirmatur.
 Objectioni in contrarium respondetur.
XII