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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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toP. 107, 1d, L. Prithmetica Insinitorum.
PROF, CIK. Corol.
et 3
arallelocrammio auferatur Triameulum
uper cumne vel aequali base aeque-altum) Refduu
quod quidem e ipsum erit Tri-
anculum inversum) erit Parallelo
rami semeissis: sin addatas TrE-
anculum, erit aecregatum (nempe
Trapexium) sesquialterum.
Patet ex praecedenci; eR enim Parat-
lelogrammum Teries Agualin;
Triargulum, Sexies PximAMOTMM.
D9
PROF. CX. Corosl.
Tem, eylindrus Parabolice excavatus, est pleni semis-
sis. CQuod idem verum est de Prismate analozice ex-
6ava+0.)
Nempe si ex Cptindro (Terie nempe A qualium Ceximatur eo-
noides Porabolicum (super eadem balc a que alcum) quod qus
dem eAt series primanorum (per ProP 4, rel 60.) quod reliquum
e eric Cemistis colius per P, OD. 108.
Acque idem acciduc h Prilmaci eximacur Pyramidoides Pa-
robolicum.
6
P R O P. CXI. TBCOrCMA.
lSeries Aqualium mutetetur serie Sccundano-
 rum, Tercianorum, CLaiEaneruM, _C. Pctidus
CrunE FOtiUS duO TrIENTCS. ErES OuadrAMICS,
MMATHOF CWINEAMLCS, E C. Sin ita AU~CATIX, CTUNE L8
 n 3
_regata