Is it possible to change the width of edges in edit mode? I'm a math teacher.  I like to use Blender to demonstrate some ideas when we talk about geometry in 3 dimensions, so I display it on our projector and the class will work together to edit some basic shapes.  I've changed the size of vertices so they are bigger and easier to see, but I haven't found a way to increase the size of edges.  Is there an option to do this?
Unfortunately, you cannot. You can edit vertex and face dot size but not edge thickness.



I defer to the other answer for the (easy?) workaround.