t chaunceth sometyme that there is a right line drawen
crosse these figures, [Sidenote: An axtre or axe lyne.] and that
is called an _axelyne_, or _axtre_. Howe be it properly that
line that is called an _axtre_, whiche gooeth throughe the
myddell of a Globe, for as a diameter is in a circle, so is an
axe lyne or axtre in a Globe, that lyne that goeth from side to
syde, and passeth by the middell of it. And the two poyntes that
suche a lyne maketh in the vtter bounde or platte of the globe,
are named _polis_, w^{ch} you may call aptly in englysh, _tourne
pointes_: of whiche I do more largely intreate, in the booke
that I haue written of the vse of the globe.

[Illustration]

But to returne to the diuersityes of figures that remayne
vndeclared, the most simple of them ar such ones as be made but
of two lynes, as are the _cantle of a circle_, and the _halfe
circle_, of which I haue spoken allready. Likewyse the _halfe of
an egge forme_, the _cantle of an egge forme_, the _halfe of a
tunne fourme_, and the _cantle of a tunne fourme_, and besyde
these a figure moche like to a tunne fourne, saue that it is
sharp couered at both the endes, and therfore doth consist of
twoo lynes, where a tunne forme is made of one lyne, [Sidenote:
An yey fourme] and that figure is named an _yey fourme_.

[Illustration]

[Sidenote: A triangle]

The nexte kynd of figures are those that be made of .iij. lynes
other be all right lynes, all crooked lynes, other some right
and some crooked. But what fourme so euer they be of, they are
named generally triangles. for _a triangle_ is nothinge els to
say, but a figure of three corners. And thys is a generall rule,
looke how many lynes any figure hath, so mannye corners it hath
also, yf it bee a platte forme, and not a bodye. For a bodye
hath dyuers lynes metyng sometime in one corner.

[Illustration: A]

Now to geue you example of triangles, there is one whiche is all
of croked lynes, and may be taken fur a portion of a globe as the
figur marked w^t A.

[Illustration: B]

An other hath two compassed lines and one right lyne, and is as
the portion of halfe a globe, example of B.

[Illustration: C]

An other hath but one compassed lyne, and is the quarter of a
circle, named a quadrate, and the ryght lynes make a right
corner, as you se in C. Otherlesse then it as you se D, whose
right lines make a sharpe corner, or greater then a quadrate, as
is F, and then the right lynes of