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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 806933011:0766
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meatured on the Scale oF hals Tansents, is the
meature of che AHglC A C B.
For thePoles of all Circles, must be as Fat distane
From each ocher, ad ische Ansle oE chc Inclination
oFcheir Planes.
Butit ehe evo Poles are not in the lame Diame.
rer, beine both found in THCIPFODEF DIAMCTCFS, FC-
duce thole Poines co che Primitire Circle, and then
the Distance berween rhem there, accounced on
che Chords, ische Guanciry oEche Ansle CouBHIT.
Thus, is che AneiC B C R BC CouehE.
A Ruter laid 20che Angulae Poinr C, and P che
Pole oF theCblique Cirele CBO, will And on che
Limb the PoincF; and being laid trom che lame
Angular Poine chro n, the Pole ofche Rishe Circle
C R O, will sive che Point n in che Limb, Wvhere
FOre, the ArK In mealured on che ChOrdS, is the
meature ot the Ansle BC R.
3. When the Anoulax Poine is some where wichin
che Primicire Circle, and yer not ac che Center,
proceed chus.
Problem 9. Lo Dran a Parallet Cirele.
chac Distance cakentrom cHe SCale oF che halt l’an-
SenIS.
Foints a ard b.
will sire C the Center ot che Parallel Circle a b d
required.
3. IF it be to be drawn Parallel co an Oblique
Find che Pole P’ol the Circle a b a and thien penele and ac che Distance suppose oF 40 De-
on the Chords, the MCaITC OF che Angle a bCFC
quired, and C b dt IS iS Complemene 10 18ODC.
BFCCS.
Suxpose che Anele abe be Conete.
2. HEic BC 20 be Dravon Parallel co che Primicive
Circle at ans siven Malce, Dra il from chre
Cencer oFche Primitire, wich chie Complement of
2. HEic be robC Drann Parallet 10 a RigtE Cir:
cle as suppose a b Parallet 10 A B, vere t0 bC
Drann at 23 Degrees 30 Mmutes antane Hom ic;
From the ChordsFaKC 23 DCGrCCS 3O MMIHuTeS, and
sec ic boch Ways on C LMB trom A 10 a, and
B 10 b, Corset its Complement 66Dcgrees, 30 Mi
nutes borh NayS From P the PolC OF AB) 10 the
Thencateche Tangents of che Parallels Distance
From the Pole oF che Righe Cirele AB, wrtich is
here 66 Degrees, 30 Minures, and setting onC FOOE
in a and b, Wwich sC OTHEF, LIHIRC LO MIle ArcheS
o Incerseet cach other lome where abore P, whiet
the Polé oF ihe Circle eb C: Atter which lay a Srces.
Ruler EO thC AngulaL POIHE: ana CHC LNO FOIeS
P and 9, and reduce inem torhe Primitire Circle
By che Points x and Z; Pois che ArK x Z meatured
First, tind D che Pole ot the Oblique Circle
AB C, and chen meature on the Scale oF halF Pan-
senes che Distance s P Which suxpose ro be 34 DC.
srces, then add to it 50 Degrees the Complemmene
oc che Circtes Distance, ic will mate 8+ Decreco,
21C