User:Boris Tsirelson/Sandbox1: Difference between revisions
Jump to navigation
Jump to search
imported>Boris Tsirelson No edit summary |
imported>Boris Tsirelson No edit summary |
||
| Line 12: | Line 12: | ||
[[Circle (mathematics)]] | [[Circle (mathematics)]] | ||
=Plane= | |||
==Non-axiomatic approach== | |||
===Definitions=== | |||
Plane via distances: | Plane via distances: | ||
| Line 20: | Line 26: | ||
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: