Closed 2D Spline Boundary Finder

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The original text showcases a sketch in Inventor that reveals how to precisely pinpoint the dimensions of a Closed 2D spline by employing sketch constraints. The method, while difficult to articulate in writing, is easily comprehensible through demonstration. It necessitates a completely defined spline curve and auxiliary geometry. While the inventor claims his technique yields accurate extremum positions, he admits uncertainty about its foolproof nature. He requests verification of his assertions. Notably, this sketch sample was generated using Inventor 2013 Professional's educational version.