ne to make a
triangle with those other twoo, and you haue doone according to
the conclusion, and haue made a twelike triangle, whose ij.
corners about the grounde line, are eche of theym double to the
other corner.

_Example._

[Illustration]

A.B.C. is the circle, whiche I haue deuided into fiue equal
portions. And from one of the prickes (which is A,) I haue drawen
ij. lines, A.B. and B.C, whiche are drawen to the third and
iiij. prickes. Then draw I the third line C.B, which is the
grounde line, and maketh the triangle, that I would haue, for
the angle C. is double to the angle A, and so is the angle B.
also.

THE XXXVIII. CONCLVSION.

To make a cinkangle of equall sides, and equall corners in
any circle appointed.

Deuide the circle appointed into fiue equall partes, as you
didde in the laste conclusion, and drawe ij. lines from euery
pricke to the other ij. that are nexte vnto it. And so shall you
make a cinkangle after the meanynge of the conclusion.

_Example._

Yow se here this circle A.B.C.D.E. deuided into fiue equall
portions. And from eche pricke ij. lines drawen to the other ij.
nexte prickes, so from A. are drawen ij. lines, one to B, and
the other to E, and so from C. one to B. and an other to D, and
likewise of the reste. So that you haue not only learned hereby
how to make a sinkangle in anye circle, but also how you shal
make a like figure spedely, whanne and where you will, onlye
drawinge the circle for the intente, readylye to make the other
figure (I meane the cinkangle) thereby.

[Illustration]

THE XXXIX. CONCLVSION.

How to make a cinkangle of equall sides and equall angles
about any circle appointed.

Deuide firste the circle as you did in the last conclusion into
fiue equall portions, and draw fiue semidiameters in the circle.
Then make fiue touche lines, in suche sorte that euery touche
line make two right angles with one of the semidiameters. And
those fiue touche lines will make a cinkangle of equall sides
and equall angles.

[Illustration]

_Example._

A.B.C.D.E. is the circle appointed, which is deuided into fiue
equal partes. And vnto euery prycke is drawen a semidiameter, as
you see. Then doo I make a touche line in the pricke B, whiche
is F.G, making ij. right angles with the semidiameter B, and
lyke waies on C. is made G.H, on D. standeth H.K, and on E, is
set K.L, so that of those .v. touche lynes are made the .v.
sides of a cinkeangle, acc