Geometry pp 39-57 | Cite as

Betweenness and Elementary Figures

  • Richard S. Millman
  • George D. Parker
Part of the Undergraduate Texts in Mathematics book series (UTM)


In Chapter 2 we introduced the Euclidean Plane model using ideas from analytic geometry as our motivation. This was useful at that time because it was the most intuitive method and led to simple verification of the incidence axioms. However, treating vertical and non-vertical lines separately does have its drawbacks. By making it necessary to break proofs into two cases, it leads to an artificial distinction between lines that really are not different in any geometric sense. Furthermore, as we develop additional axioms to verify we will need a more tractable notation. For these reasons we introduce an alternative description of the Euclidean Plane, one that is motivated by ideas from linear algebra, especially the notion of a vector.


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Copyright information

© Springer-Verlag Inc. 1981

Authors and Affiliations

  • Richard S. Millman
    • 1
  • George D. Parker
    • 2
  1. 1.Department of Mathematical and Computer ScienceMichigan Technological UniversityHoughtonUSA
  2. 2.Department of MathematicsSouthern Illinois UniversityCarbondaleUSA

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