eche to other, yet is euery side equall to that other
that is against it, as you maye perceaue in this figure. R.

[Illustration: R]

[Sidenote: A losenge] The thyrd kind is called _losenges_
[Sidenote: A diamond.] or _diamondes_, whose sides bee all
equall, but it hath neuer a square corner, for two of them be
sharpe, and the other two be blunt, as appeareth in .S.

[Illustration: S]

The iiij. sorte are like vnto losenges, saue that they are
longer one waye, and their sides be not equal, yet ther corners
are like the corners of a losing, and therfore ar they named
[Sidenote: A losenge lyke.] _losengelike_ or _diamondlike_, whose
figur is noted with T. Here shal you marke that al those squares
which haue their sides al equal, may be called also for easy
vnderstandinge, _likesides_, as Q. and S. and those that haue
only the contrary sydes equal, as R. and T. haue, those wyll I
call _likeiammys_, for a difference.

[Illustration: T]

[Illustration]

The fift sorte doth containe all other fashions of foure
cornered figurs, and ar called of the Grekes _trapezia_, of
Latin men _mensulae_ and of Arabitians, _helmuariphe_, they may be
called in englishe _borde formes_, [Sidenote: Borde formes.]
they haue no syde equall to an other as these examples shew,
neither keepe they any rate in their corners, and therfore are
they counted _vnruled formes_, and the other foure kindes onely
are counted _ruled formes_, in the kynde of quadrangles. Of
these vnruled formes ther is no numbre, they are so mannye and
so dyuers, yet by arte they may be changed into other kindes of
figures, and therby be brought to measure and proportion, as in
the thirtene conclusion is partly taught, but more plainly in my
booke of measuring you may see it.

And nowe to make an eande of the dyuers kyndes of figures, there
dothe folowe now figures of .v. sydes, other .v. corners, which
we may call _cink-angles_, whose sydes partlye are all equall as
in A, and those are counted _ruled cinkeangles_, and partlye
vnequall, as in B, and they are called _vnruled_.

[Illustration: A]

[Illustration: B]

Likewyse shall you iudge of _siseangles_, which haue sixe
corners, _septangles_, whiche haue seuen angles, and so forth,
for as mannye numbres as there maye be of sydes and angles, so
manye diuers kindes be there of figures, vnto which yow shall
geue names according to the numbre of their sides and angles, of
whiche for this tyme I wyll ma