The direction of YX, being a thrust upwards, shows the direction in which we must go round the triangle YXE to find the direction of the two other forces; doing this we find that the force XE must act down towards the point YXE, and the force EY away from the same point.
Putting arrows on the frame diagram to indicate the direction of the forces, we see that the member EY must pull and therefore act as a tie, and that the member XE must push and act as a strut.
Each " saying " is introduced by the phrase Jesus says " (XE'y€) and the collection is described in the introductory words of the 1903 series as Xoyyoc not as X&yca.
The word was coined by Demiscianus, a Greek scholar, at the request of Federigo Cesi, founder of the Accademia dei Lincei, from the Greek ri XE, far, and ovoirEUU, to see.
If the origin of rectangular axes fixed in the lamina be shifted through a space whose projections on the original directions of the axes are X, u, and if the axes are simultaneously turned through an angle e, the coordinates of a point of the lamina, relative to the original axes, are changed from x, y to X+x cos ey sin e, u+x sin e+y cos e, or X + x ye, u + Xe + y, ultimately.
