Lines in various orientations shown colour-coded in the top right quadrant of the original circle are deformed to the orientations and lengths as shown in the bottom left quadrant of the ellipse. (The deformed lines should be in the top left quadrant of the ellipse, but have been moved to the symmetrically equivalent position for clarity). Note that some lines are shortened, some lines are extended, all lines except the vertical and horizontal are rotated so as to be less steep.