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• On the models of the hyperbolic plane

  203-206

  László Németh

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  23

  We can see the most familiar models of the hyperbolic plane in one figure, which shows the connections between them by the help of projections.

• Beweise von Sätzen mit Hilfe der Modelle der hyperbolischen Geometrie

  159-167

  Jenő Horváth

  Views:

  23

  We give simple proofs for some problems of elemental hyperbolic geometry using the Poincare's half-sphere model. Our method is that a point of a figure is transformed to a special point of the model.