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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 691, page id 851708439:0715
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DE
C O N 0-
0.9922 0.7750 0.558F
0.9980 0.764F O. 5302
c.
O. 75
0.9980 0.7329
0.9922 0. 7F3F
0.9823
0.5
0. 4678
O. 434. F
0.6006 0. 3900
0.9682 0.6657
O. 363T
0.9499 0. 6382 0., 3265
0. 92 70
0. 8992
06084 0. 2897
O.5761
0.8660 0. 5413
0. 8268 0.5038
0.7806 0. 4635
O. 7262
O. 4F97
O. 2529
O. 2765
O. 1809
O. 2463
O. LF32
0. 6624 O. 372.F 0.0827
0.5830 0. 3788 6,0546
O. 4.B4. F O. 2572. 0.0303
C U N F I 5.
0. 34 FF 0. 1240 -0,095
O. 2963
O. 25
O. 2027
O. 7550
O. 1074
00605
O. OT48
--0.0290
- 0.07+3
= 0. 1083
 O. T4. 2. L
--0, F708
= 0. 1933
- 0. 2067
=0. 2095
0.0624 - 0. 1715
=0. 1967 = 6. 4236 -0.6505
0. 348F O. 1795 9,0109 = 0. 1577 = 0. 3263 =0. 4949
.
45. Sexto. Si secetur plano B gC, transcunte per B, F78. 7. perpendiculari re.
Etanoulo AB DC, _ Sccante lacus A C in c, e quodris triangulorum RSa in po:
Currae proprietas haec eric; VH AC PCU a R, ad aP; Sic RS, ad es. Fc longicudo
iptius ap sic prius invenienda; Or B A, ad B a; lcu BC ad B P; Sic AC ad 2P.
46. In Speciebus, sic;
AB =- CD = = R.
A 2 = CR = c.
RS = V: X = c
2R = AC = A.
AC = a
BA. B2:: BC. BP:: AC, 2 P.
R. R FC::
2p =
2F
aR (= AC). ap:: R5: p0.
R:
 a:: V: R - c2.
e
R FC
+ av: X - c.
2F aV: R - 8
47. Si vero planum hoc (per B trantiens) secet DC in quovis puncto P prius-
quam perrinsar ad c in continuatione iplius A C; Curra proprictas haec exit; Se-
cetur idem Planum (ut prius) a quoris Priangulorum RS a, IPSC. O A parallelo-
rum; exirque OF DP, ad DR; seu, SEBP, ad Be; CCU AR (= AC) ad 2 P; SiC RS, a d P0.
48. In Speciebus, Lic:
CD = R.
=
C
CR = 6.
RS = V: R - c2
DP = R = C = Y.
DR = R - c = v.
AC:
A
DE. DR:: BP. BP: : aR (= BD = AC). ap:: R5. p0.
R C. R c: : Y. v:: A.  A= ∞ A:: V: R - 8.
2 P =
R.
Y: N - c.
6. 184. 2.
b. 24. 2F
O. 2969
O. 25
--0. 4.758
-0. 5446
- 0. 6085
0.
+=
-0.0624 = 0. 3275
O. 1240 = 0. 403r
-0. 3476
6. 3954
6. 4530
0. 465T
- 0.6663
= O.7166
-- 0. 7578
=-0. 7880
c. 4880 - 0. 8057
- 0. 4998 - 0. 804.3
 0. 4960 - 0.7854
= 0.430
. 13 1
V: X= c
=V:  - 6: =
9. Ves