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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 806933011:0844
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eled Frianele, che Square os et
Erpochenule is equael rothe sum os the squares
the other mo sides.
L(7, 1b0 = Oba F D ac.
ans ane
a Triangle be bissota; ihe bissect.
Il divide the opposite Side in the sam
proporcion a the L’exs os che ele are e0 on
another.
Texche Sides ofthe Tr
and che Bissectins Line s
le den  d
e onomuninmemmm
(2y, a : b:: c: a
Produce the Leg b, tillf = a che
the Anole, and dean che Line e. Then
sle ef a be an loscett and conse
Bles ac che Base c, Will bc esual: And cheretori
Cach Will be equal ro ha ine cetu Angle, (BC-
Cause thac is external attet ceuat W0 chemi borh:)
Ot
Trian
the An
Demonstration.
, FOr The Squale b8 is made ux OF che tv
Rectangles bf and d 8.
But bS = Dba, For cb: b a 3 : b a3 b d.
ThacIS, 1ba = cb X b d = C bf
And L d8 = V aC, FOF BC: aC:: a c: c d
ThacIs, D a 0 = bCX cd = C d8.
WVheresore O bc( = D Bf F D d e
Ba V aC. D. F. D.
LiDkOLL ARL.
Theretore in ee Arst Triangle, che Bissectins
Line sis parallet cothe bale e; and contegaes
62 60
Tharis, a: b :: c: d. 8. E. D.
TRTANGDLAR Compasses, ave such as have
Ther are used in Maps, GlObes, C9C.
TRTANGDLAE Duadranc, i5 2 Sector, Wtth 2
loole Piece ro makeir an Equilaterat Lilansu: the
Caccricaris graduated ot u, Wouch che Suns Place,
chree Legs or Fcetro rake oA any Triansle at once.
sypothenuse ot any Richr-ansled Trianele, Mall Be
equal eo rro ocher limilar Figures made on the
Sides. Because all such Figures are to one anothe.
2sche Squares oF cheir Fomolosous Sides.
Tou have abore chrec octer ways oF demonstra
tins ehis admirable Propolition, wirtionr the DC
Triie OE Pcoponion beims b leaont.
help oE a Scrins and a Plummer, and the Divitions
Praduared on che loole Piece, it mar be made id
chara.
Oeclination, and many ocher usetul Lines, and by the
serre For a Ouadrant
TRTANGOLARE Ossiculum; che Triangnlar liE
Ele BONC IS FMaE WIICH IS PTaCCA DCCMTAL M L amb-
doidal Sucure ofche Stcull, arceche sasittalis. BIa
TRIANGOLARIS, a Mulck O MC Thorax,
Which wich its Parrner, lies on cachudee Camlazo
Ensiformis, wichin che C avies ot che Thorax, under
Che. Sternum; Lometimes chis appeats lo d chreci
al Aner rimes four dictinet Muscles on each side.
Ie arises from the Interior parr ot che Os Pectoris.
ohence its upper parrascends, ald lorver descends
to ls Implancations ac the Bonr cMainss ot lIC
tourch, silch, sixch, and sometimes lerench and
Cioheh KIBS near their Conjunction wich theie C ar
cilages. les repured se by moll (iEnor aII) AN2-
tomilts, isto contract the Breast.
6Star.
Priars.
IRICLLd,
LRTANODTOS Septentrionalis. Or Veltoton
Ftence ris plait, Thar any Figure made on ih
Elic Triangle, a Norchern Constellation consistins ot
THLIBCACHZS, is the FOOFOF a L. arin Verse
contistins of chrec Syllables, and chose aIl MOrE, 25
TRIBRACHDS, che Came wich Fribr achys.