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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
# Folio 456, page id 851708439:0480
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Cap. C V.
L G F B R A
Solustio.
Incelligatur factum quod portulatur. Lt in expolitarum alteram, ut B A ducta
incellisantur perpendiculares EF, CM, FTN. Reliquaque expolicae l l, CC,
DF ipsi BA occurrenres in B, C, D.
Ponamus.
(BF, FF:: 5. L.
FF =C. AF = a. BC == 6. BD = 4. Lb BCAL. MC: : 8
L
(DH. XHI:: B. 2
GM =m e. AM = m a. C F =c + ) c.
HIN = n C. AN =na
DE = f c. F. HI = a t ma. CF NIF CHI. DL- DF- FH.
DA=BnC.
DF. = a 1fC.
CM = emC. F. N =- a  na. c) se a ma- eme. Bnc: d fe- a na
IH Sia- a  ma. a F na = d  f0 - no
c+fe-8
+F
1+ se - bne
IF
Conamus deinde (ad abbreviandum Calculum) m. f L = k, _ n. = L = 1.
Freo.
1C +IFe- te m e = Za L EfC = RBnC
u et  dse
sdelde
I5=ebn + 18m
Elabetur BIIIX quanEILaS C = F F: Adeoque Punctum F; et inde Puncta reti.
qua, iplaque AF CFF quaesta.
Nocandum interim, pro vario situ Punctorum C, D, ad B, A, rariari tigna
F -: Tra tamen ut Calculus nihilo inde eraturus st perplexior; sed eodem
plane modo procecturus.
euncta A, E, MI D cundem inter se ordinem retinene, quem A, F, G, H;
qui ex datis Ctacim constat. Pro rario autem illorum situ, Aquationes conspi.
cientum in hac rarietate Tubleripta; nempe,
Oido.
NH. A
H AN
e. NA
F. NTA
 ei
HCF. A
F
DF
D
AEquatio
ma-
a
1
na = E EMI
 dia
Excipiendus aurem ett 2 Caleulo supraposito calus inus aut alter: Nempe
ubi expolitarum quatuor Rectarum, rel ternae, vel bis baas unt invicem Pa
erit Problema in omni ratione expolica possibile. Ouoniam C LALAHCHIMIUS
decerminabit duorum segmentorum ad inricem rationem; et Guslleu ommium
quaruor Paralletismus, decerminabit omnium segmentorum inter le rarionem. Sin
habeantur bis bina Parallela, nulla omnium cibuS FEsu BCIet.
dchohunt