English: When an isosceles triangle is formed from two Kepler triangles, reflected across their long sides, it has the maximum possible inradius among all isosceles triangles having the same length for their two equal sides. See: Halleck, Ezra (March 2012), "Teaching tip: Consider a circular cow", The College Mathematics Journal 43 (2): 133, doi:10.4169/college.math.j.43.2.133.
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