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The first interesting theorem in Non Euclidian Geometry is...

This isn´t a proof, but...

Paper but it´s the object of the study fisically represented: paper model of hyperbolic plane (by Bill Thurston). I´m lovin it!

And ...and of course, the models of Klein and of Poincaré of hyperbolic plane (My favorite is the half plane: nice!)

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This isn´t a proof, but...

Paper model of hyperbolic plane (by Bill Thurston)

I´m lovin it!

And of course, the models of Klein and of Poincaré of hyperbolic plane

(My favorite is the half plane: nice!)

show/hide this revision's text 1 [made Community Wiki]

This isn´t a proof, but...

Paper model of hyperbolic plane (by Bill Thurston)

I´m lovin it!