I've lived in France; but I haven't lived everywhere in France. And I'm certainly not French. I'll assume goodwill, although you've thrown me a trick question

I've lived in France; but I haven't lived everywhere in France. And I'm certainly not French. I'll assume goodwill, although you've thrown me a trick question; so my answer is that France doesn't have a northeast "corner". Looking at that wikipedia map, I'd say they're both in the northeast, but neither is in the corner (Belgium is).