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51M10 - Geometry :: Real and complex geometry :: Hyperbolic and elliptic geometries and generalizations

  1. AAA owned by Wkbj79
  2. AAS is not valid in spherical geometry owned by Wkbj79
  3. Beltrami-Klein model owned by Wkbj79
  4. biangle owned by Wkbj79
  5. circle has one center owned by Wkbj79
  6. comparison of common geometries owned by Wkbj79
  7. converting between the Beltrami-Klein model and the Poincaré disc model owned by Wkbj79
  8. converting between the Poincaré disc model and the upper half plane model owned by Wkbj79
  9. defect owned by Wkbj79
  10. ideal triangle owned by Wkbj79
  11. Lambert quadrilateral owned by Wkbj79
  12. limiting triangle owned by Wkbj79
  13. Lobachevsky's formula owned by vmoraru
  14. non-Euclidean geometry owned by Wkbj79
  15. parallel lines in hyperbolic geometry owned by Wkbj79
  16. Poincaré disc model owned by Wkbj79
  17. Poincaré upper half plane model owned by Wkbj79
  18. proof of AAA (hyperbolic) owned by Wkbj79
  19. proof of uniqueness of center of a circle owned by CWoo
  20. Saccheri quadrilateral owned by Wkbj79
  21. triangle owned by Wkbj79

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