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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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De Sectionibus Conicis.
DROP. 2
elt.) Adeogi, SiTriangulum quodvis V BS, rectis
GuOEcUnq3 a a BB, 3 7, _cC. bali BS DaralleliS, e 8-
qualicer ab invicem disstis, secCtUr; quae propterca
Crurum utrumvis (adcog; ex utrumq:) dividant in
legmenta aequalia, (et propterea etiam torum Prian-
sulum in sermenta aeque alca:) erunt illae rectX e a, BB,
2. ecc. Arithmetice proportionales: (Tunt enim inter
SC a a, BB, 7 7, _c. uE V a, VB, V 2, _C. hoc CHt, uC 1, 23
3, C. Propter aquales exccllus Vas aB, B7, _C.) Idcoq;
s rectae illa supponantur numero infinitx, eric omnium
Series, (hoc cs, tocum Triangulum, Der PTOP. PEX
ced.) agpregatum rectarum numero intinitarum a-
rithmetice proportionalium, quarum minima est pun-
ctum V Cverticis nimirum) maxima vero est BS ba-
Es Trianigulio
Acq. Idem conringet h intinicis illio rectis supponamus eori-
dem Parallelogramma in eodem plano incerjici, quorum An-
sulorum alcieudo sic = alcicudinis Frianguli: Frune Scilicer
ee illa Arichmetice provorcionalia. Cum enim aeque alca Fint.
Hae
sune et balibus proxorcionalia.