Who said that.........daveI do wonder why you think you can have a quad face with 3 vertices... its physically impossible...
i interpret that to be that he wants to delete a vertex on the corner and still expect the quad to be there. I don't know how else to read it.I've got more troublesome geometry. One step I've tried is to select the vertices and press delete to remove any stray ones, but if there's a vertex on a corner ie. only two edges connected to it either side, it's deleted. The problem is that it's leaving me with 3-sided polygons - is there a setting I can adjust to preserve quads, or is it sloppy modelling on my part?
good tip bullet -- thanks...select the corner verts first...then shift select..and this will highlight all of the verts you want...then merge....or delete....