User:Boris Tsirelson/Sandbox1: Difference between revisions
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imported>Boris Tsirelson No edit summary |
imported>Boris Tsirelson No edit summary |
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[[Circle (mathematics)]] | [[Circle (mathematics)]] | ||
=Plane= | |||
==Non-axiomatic approach== | |||
===Definitions=== | |||
Plane via distances: | Plane via distances: | ||
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Plane via [[cartesian coordinates]]: | Plane via [[cartesian coordinates]]: | ||
==Axiomatic approach== | |||
==Modern approach== |
Revision as of 23:50, 28 March 2010
Plane
Non-axiomatic approach
Definitions
Plane via distances:
Plane via right angles (orthogonality):
Plane via straight lines:
Plane via cartesian coordinates: