The Path-Way to Knowledg, Containing the First Principles of GeometrieRecord, Robert
Science
The Path-Way to Knowledg, Containing the First Principles of Geometrie
Record, Robert
Geometry -- Early works to 1800
For the declaration of this Theoreme, I haue drawen iiij.
circles, the first is A.B.C, and his centre H. the second is
A.D.G, and his centre F. the third is L.M, and his centre K. the
.iiij. is D.G.L.M, and his centre E. Nowe as you perceiue the
second circle A.D.G, toucheth the first in the inner side, in so
much as it is drawen within the other, and yet it toucheth him
but in one point, that is to say in A, so lykewaies the third
circle L.M, is drawen without the firste circle and toucheth
hym, as you maie see, but in one place. And now as for the
.iiij. circle, it is drawen to declare the diuersitie betwene
touchyng and cuttyng, or crossyng. For one circle maie crosse
and cutte a great many other circles, yet can be not cutte any
one in more places then two, as the fiue and fiftie Theoreme
affirmeth.
_The .lix. Theoreme._
In euerie circle those lines are to be counted equall,
whiche are in lyke distaunce from the centre, And contrarie
waies they are in lyke distance from the centre, whiche be
equall.
_Example._
[Illustration]
In this figure you see firste the circle drawen, whiche is
A.B.C.D, and his centre is E. In this circle also there are
drawen two lines equally distaunt from the centre, for the line
A.B, and the line D.C, are iuste of one distaunce from the
centre, whiche is E, and therfore are they of one length. Again
thei are of one lengthe (as shall be proued in the boke of
profes) and therefore their distaunce from the centre is all
one.
_The lx. Theoreme._
In euerie circle the longest line is the diameter, and of
all the other lines, thei are still longest that be nexte
vnto the centre, and they be the shortest, that be farthest
distaunt from it.
_Example._
[Illustration]
Public-domain text, read in full here on John Shaqi.
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