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# Title: Leibniz-Handschriften zur Mathematik LH 35, 12, 2
# Folio 118r, page id 00068195:0235
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eptembu. 1678.
inquisitio itrta Arga su segmento circuli Angulo
emplum elegens AEB vel A(E B semiper idem
appottetur E
Angulus AEF s vocetur a
NCXF)
Angulu EAB vocetur, a
(E) A B
E
DX A
se
e
a 
 e + f, aequ. (e) +f. , quia
quia e+ 5 est ang. AEF + BEF seu auig. AEB
et ang (e) Hf estang A2 HE seuang. NE) B
AE F
ACCV
BCCF
spunt sumete
a + bequ. (a) + (b)
dentis ergo aequalibus es f et (e) +F) aequabuntur a + b et. (a) + Lb)
a+ e aequ (a) + (C) aequ b + f aequeb +(F)
Ano enim quilibet anguli conjuncti prent omnes anguli tramgubi
(6)
emto recto.
quae aequatio jam tum patet componendo aequ.
Ex aequ. 3 et 5 fit,
(e) aqu. e + f - (5) ped 1 (() aqu a 4 e on (a) per 3.
ergo (a) = (f) aequ a - f ec (5)aegu) (a) + f -a
tursus (f) aequ b + f - (b) . Ergo (a) + (b.) aegu a + b
Nec quicquam aliud inde ducemus (Quod netabile esit
acile antem colligi potest hinc, quia a et (a) inaequanles
etiam inter oj angulos cognomines intequales fores fore
esse auter deberent aequales, si hujus calculi ope ab angulus
(a) vel (6) vel ( _(e) vel (5) absolute per a. b. e.f
inveniri poset.