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Coxeter- Exersice 3.2.4

Author:
Taylor_Ikeda
Topic:
Geometry
It is not possible to draw a configuration 7_3 because it conflicts with the axiom 2.17. A 7_3would be a quadrangle whose diagonal points would all be collinear. Normally diagonal points only have two points going through. Please experiment with the figure to see.

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