Acute Problem

Auteur:Lamberto Lamberti

PROPOSITION: There do not exist four distinct points A,B,C,D on the plane such that the interior angles of the triangles ABC, ABD, ACD, and BCD are all acute. http://www.mathpages.com/home/kmath311/kmath311.htm

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အခြေခံ data အခေါ်အဝေါ်များ

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