Maitland Club > Works of Sir Thomas Urquhart

76 THE TRISSOTETRAS.
the Cathetothesis. Fr. a subducting of a lesser from a greater, whether it be side
or angle.
G. An angle or side given. Gre, or aggre, the summe or aggregat.
Hal, or al, the halfe.
/. Vowel, an angle required. J. Consonant, the addition of one thing to another used
in the clausula of some of the finall resolvers. In, intus or inwardly, and sometimes
turned into Iu, the segments of the base, or the segmented base.
A". The complement of an angle to a semicircle.
L. The secant. Leg, one of the comprehending sides of an angle. This representa-
tive is once only mentioned.
M. A tangent complement.
A 7 . A sine complement.
O. An opposite angle, or rather cathetopposite. Ob. the next cathetopposite angle,
by some called the first opposite. Op. the prime cathetopposite angle, by some
called the second opposite. Oph. the first of the coopposite angles. Orth. an acute
angle. Ops. the second of the coopposits. Os. opposite angles in the plurall num-
ber. Oe. the second base. Ou. the angle opposite to the base.
P. Opposite, whether angle or side. Par. a parallelogram or oblong. Pros, prae-
subservient. Possub. possubservient. Pro. proportionall. Prod, directly propor-
tionall. Pror. reciprocally proportionall. Poic. the square of a line. Pram, prae-
noscendas.
Q. Continued if need be. Ojia>s. quaesitas. Qua. quaere or required.
P. The secant complement, and sometimes in the middle of the Cathetothesis signi-
fies required, as alwayes in the latter end of a finall resolver it doth by way of em-
phasis, when it followes /. or Y. R. likewise in the axiom of Rulerst, stands for
radius. Ra. the radius, and in the scheme, the middle angularie radius.
S. The sine, and in the close of some resolvers, the summe. Sim. of like affection
or nature. Subs, subservient.
T. The tangent. To. the radius or total sine, but in the diagram it is taken for the
left angularie radius. Tw. the right angularie radius in the scheme proposed.
Tol. the first hvpotenusal radius thereof. Tom. the second hyp. radius. Ton. the
third hyp. rad. Tor. the fourth hyp. rad. Tolb. the basiradius on the left hand.
Torb. the basiradius on the right. Tolp. the cathetorabdos, or radius on the left.
Torp. the cathetoradius on the right. Th. the correctangle.
U. The subtendent side, /".consonant, to avoid vastnesse of gaping, expresseth the
same in severall figures. Ur. the subtendent required.
W. The second subtendent.
A". Adjacent or conterminal.
Y . The side required.
Z. The difference of segments, and is the same with dt, or dif.