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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)
# Folio 21, page id 824573315:0105
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PROP. 7.
DeSectionibus Conicis.
EF
DO eri q: problerca Elliplis nullius lacicudinis, hoc est, linea
recta, ucrinq; quilem cerminata; (Talcem nili ee punctum a
in cruris VS puncto V altignetur; quo calu, proprer coinci-
demiam punctorum a, a, recta illa degenerabic in unicum
punctum.) Pari modo. S delcribenda essec Hyperbola; Potico
AC priuS, puncto A in V, Cubicunq: altignecurH,) recta H A a
Crus uerumq: V B, V S, eodem puncto V, Sccabic; adcoq; trans
verta diamerer A a C proprer coincidenciam punctorum
A. a, V, cranelcers adeoq. Eyperbola in Triengulum degenera-
Bic, Cuc ex Hyperbola doctrina poltea cradenda collisi pore.
rie interim idem lacis pacec ex dictis Prop. 6.) Salcem nist recta
unsal
ausise
sa
A_ eoulg; recedtat a crure VS, ne iph VB contichtat, quo
patu, (hivc A assienetur in verrice V, sre ubirio alids in erure