If you haue a line appointed, and a pointe in it limited,
howe you maye make on it a righte lined angle, equall to an
other right lined angle, all ready assigned.
Fyrste draw a line against the corner assigned, and so is it a
triangle, then take heede to the line and the pointe in it
assigned, and consider if that line from the pricke to this end
bee as long as any of the sides that make the triangle assigned,
and if it bee longe enoughe, then prick out there the length of
one of the lines, and then woorke with the other two lines,
accordinge to the laste conlusion, makynge a triangle of thre
like lynes to that assigned triangle. If it bee not longe
inoughe, thenn lengthen it fyrste, and afterwarde doo as I haue
sayde beefore.
[Illustration]
_Example._
Lette the angle appoynted bee A.B.C, and the corner assigned, B.
Farthermore let the lymited line bee D.G, and the pricke
assigned D.
Fyrste therefore by drawinge the line A.C, I make the triangle
A.B.C.
[Illustration]
Then consideringe that D.G, is longer thanne A.B, you shall cut
out a line from D. toward G, equal to A.B, as for example D.F.
Then measure oute the other ij. lines and worke with them
according as the conclusion with the fyrste also and the second
teacheth yow, and then haue you done.