To make a triangle of any .iij. lines, so that the lines be
suche, that any .ij. of them be longer then the thirde. For
this rule is generall, that any two sides of euerie triangle
taken together, are longer then the other side that
remaineth.
If you do remember the first and seconde conclusions, then is
there no difficultie in this, for it is in maner the same
woorke. First consider the .iij. lines that you must take, and
set one of them for the ground line, then worke with the other
.ij. lines as you did in the first and second conclusions.
_Example._
[Illustration]
I haue .iij. A.B. and C.D. and E.F. of whiche I put .C.D. for my
ground line, then with my compas I take the length of .A.B. and
set the one foote of my compas in C, and draw an arch line with
the other foote. Likewaies I take the length of E.F, and set one
foote in D, and with the other foote I make an arch line crosse
the other arche, and the pricke of their metyng (whiche is G.)
shall be the thirde corner of the triangle, for in all suche
kyndes of woorkynge to make a tryangle, if you haue one line
drawen, there remayneth nothyng els but to fynde where the
pitche of the thirde corner shall bee, for two of them must
needes be at the two eandes of the lyne that is drawen.