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Topic: What does one call vector geometry without a coordinate system?
Replies: 32   Last Post: Sep 9, 2013 4:45 PM

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 Tanu R. Posts: 640 Registered: 12/13/04
Re: What does one call vector geometry without a coordinate system?
Posted: Aug 30, 2013 7:34 PM

On Fri, 30 Aug 2013 16:30:23 -0700 (PDT), lite.on.beta@gmail.com wrote:

> I remember in grade school (grade 8 or 9ish) we did geometry with vectors as a tool but without any coordinate system.
>
> We often picked a random point and called it O, then proved things like if M was midpoint between two points A, B, then:
>
> OM = 1/2 * (OA + OB)
>
> A lot of stuff was proven with just points and vectors from points to other points (with the fact OX = -XO used heavily).
>
> What's the name of this geometry? I'm thinking of looking this stuff up again.

They called it be topology...