And one may
9. Draw a periphery by three points, which doe not fall in a right line.
As here, by aei, (First from a, to e, let a right line be drawne; And likewise from e to i. Then, by the [12 e v], let both these lines be cut into equall parts, by two infinite right lines: These halfing lines also shall meete: And in their meeting shall be the Center, by the [8 e]. And therefore from that meeting unto any of the sayd points given is the ray of the periphery desired.)
10. If a diameter doe halfe an inscript, that is, not a diameter, it doth cut it perpendicularly: And contrariwise: 3 p iij.
As let the diameter ae, halfe the inscript io, which is not a diameter: And let the raies of the circle bee ui, and uo. The cause in all is the same, which was of the [5 e xj].
11. If inscripts which are not diameters doe cut one another, the segments shall be unequall. 4 p iij.
