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Un article trouvé pour ce sujet.
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A convex quadrilateral in spherical geometry |
2008-07-09 |
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Joan pose la question :
What is the min and max number of obtuse angles possible ia a convex quadrilateral in Spherical Geometry?
I know that the Saccheri has 2 obtuse angles and the Lambert has one, but are there other possibilities?
Thanks for your help.
Chris Fisher lui répond. |
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