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Consider polygons with 10 sides in which we allow sides to intersect. Each intersection point can be an intersection point of two edges only, not three or more.
Find such a polygon with the largest number of intersections.
Consider the same question for a polygon with n sides.
- Is there a formula for the maximal number of attainable crossings when n is odd?
- Is there a known formula when n is even?Source: Sigbjorn Vik, Macalester Student
© Copyright 2001 Stan Wagon. Reproduced with permission.
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