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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0850
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By Cunters Scales
Ocherile chllo.
THC EXIEHE Ttom22 DeOrCeS 37 Minutes, F01
Dran a Circle about the Frianose troin Wstole
Centre O, let che Perpendiculars e, K, ad
and ihe L ires 0 a, 0 b, al. bb _ atta rO chC
chree Angles.
Fhe Sides oF the Friangle vou de Dectea by
ihe Perpendiculars, and conséqueney à c de
cb, bk = KC and c t = F a. Whcretore a5 Mhe
Wrhole Line a b is t0b 0:: (0 ill che Hats sde à c
be to. the halFkc; bue a c ald kc, are the Sines
Of the Ansles at the Cenrre a d e and L0c, which
Angles ac the Cenrre are sererally equal rothe An-
Sles oF the Triangle c’and a Decause cher Aand or
halfrhe ArKSs chac eHC Lses BE The Friansle do;
Wheretore a b : b c:: 5, 6: 5, a.
Tet F, B, and O, Be the Sides oF an Oblgue
Plain Friangle; a b and 0, ls chree Anoles; here
because There IS nO RIZHE-anGlC, CATCC TINAS MICLE
be atvars given; hac Bo, cuntet co sides and one
chree Sides.
From vhence will arile the etiree Former oF he
vards, to 90 Degrees In the Line of Sines
vill reach (Om 328, 20832   L  L
Bers.
Ciren HI and V. V. Required B.
R: 1 ::
R = 10
TI = 20 9201255 = 632
5, a = 9. 9652480 = 67 23
B = 2. 8853719 = 768 = B.
C ASF VII.
By Cunter s Scale.
Or, be lec Fall 10 the chree Sides oF chie Priargle.
Angle, one Side and rvo Angles, ox else all the
Back eo 5y Degrees 23 Minures, vill reach in
the Line oF Numbers Trom 832 bachatus l P loo es
768.
THC Extent From 90 Degrees in Line oF Sines
 Resration of Oblique Plain
Lmaneles.
AXIOM H.
le:
proport
to one another, as the sines os their oppd
Ansleso
un everys
Civen. Required. PropOrtiOnS.
50:: H. 5, b. Not
that tne anele b is amti
uOuS, and vou MaIE col
lect trom the Circumstan
ces oF ehe TrianBIC, WnC
eadet de de adldecite et a
cute
re fiest finae chc H
sle b by Case 2, eneme
wist be knomn Bs cakine
the Sum oF b - c. FFOI
180. TBen 5,0.C::
I: : S, a. B.
:: 5, b. H.
Z. OF che opposite AnBleS
Z. X oF the opporte
Angles, anc
Z
L
Findthe Aneles By THC
Former Ca(C, and thenS, 
:: 5, a. B. Or 5, 6. O:.
and che
10:: H - O. X.
B and E. B - 2 X = BD
Then Wilt I. R:
B
Cotine Ansle C. and
R:: b
axiom
0. Tine Ansle 
And chechree last are
Pec Fall scom chè Arese b, a Perpendicularro che euo tollovuie au.
Base a c: P’or then chewhole will De relolved into
2 Riphr ansle Friangles; and consequenty by Axi-
om the ArH a b. R : : b d. 5. a. 2110 b c. R :: b d,
, c. Woheretore a b. Bc.. 30, d, a. by Recipro.
caltir) B LrOpOriOn.
(olved by che help oE che
A X LVM