May I kindly ask you to teach me how to align the symmetry axis (in blue) of the attached picture along the Ox and/or Oy axis. The axis of symmetry is slightly off (rotated to the right). In other words I am already able to extract the points of the edge and plot them. However I don't know how to extract the points of intersection of the symmetry axis with the edge and then to position them (both) either on the Ox or on the Oy. Thank you!