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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 95, page id 824573315:0307
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i
124, 223.
Arithmetica Insinitornn.
PROP. CXZIV. Coronarium.
Tem, si Trioneuli aD B rectae respective ducantur
in rectas Trapezii aD B (aeque- alti, at que cum ipso
Triangulo Paralleloerammum complentis:) quae pro-
deunt rectancula erunt agnalia totidem semilibus planis
Conoideos (vel eyramidoideos) elliptici: Et medis propor-
tionales DE, DE, OC. Brunt ordinatim applicatae im
Circulo, vel saltem) Ellipse.
Demonstracio facile patet ex dictis ad PrOD, 221. FF 133
Nam legmenta
rectae BB in hoc
tigura cancun.
dem ralene ac-
que legmenca
Diametri in il-
la Foura.
Si aucem
tam rectae AD.
DB, linc aequa-
les, quam rectae
AD DC, ad in-
ricem DEIDeM.
dicutarES CPUNE
iDC I E, VE,
ordinalim applicacae in circulo; sine minus, Calcem in ellip-
A. Porcio aurem sre circusi sive Ellipleos AF, major
eH aue minor quam Ouadrans, PrOUE D B major eA Zuc minox
AUaN D B.
PROP. CXXV..
Corollarium.
 exponatur series Aqualium musetata serie Terci-
anorum; Residuorum Guadrata, Cubi, Biquadra-
at
a, eC. ad Periem cocidem COrum MaxIMO, uane  na
Xquadiu