... when the first parts of the one doe agree to the first parts of the other, the meane to the meane, the extreames or ends to the ends, and lastly the parts of the one, in all respects to the ... parts, of the other: so Lines are congruall or agreeable, when the bounding, points of the one, applyed to the bounding points of the other, and the whole lengths to the whole lengthes, doe ... consisteth in two things, to witt in the equality of their angles, and proportion of their shankes. Therefore, a way, which if thou shalt please to follow, it shall lead thee to thy wayes end, as directly,...