what is the history of geometry?

what is the history of geometry?

thats a rather open question. everything uses geometrics. you cant say it statred at a certain point in time but i guess there were some significant breakthroughs, pythagoras being one of them.

I'd answer, but I know I'll just go off on a tangent, cos that's what I do. I can't even sin my name, or cosine a document with doing it. I seem to have this radius of confusion, despite my small circumference.

http://geometryalgorithms.com/history.htm