True, but the point is that without a knowledge of geometry of any sort, or in the face of someone who is not willing to accept the first eight basic Axioms which can not and have never been proven themselves, your arguments are useless to you against their convictions.
I'm not sure if you know what you're talking about. Can you describe it in another way? Can you explain these "first eight basic Axioms"? That doesn't seem to be general terminology for... anything.
Why do you think they need to be proven themselves? Most axioms in mathematics are more definitions than anything that requires proof of any kind.