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Answer by xnor for The Erasmus tedrahedron
No, it's not possible.For any vertex, the three edges coming out of it must have distinct length, since otherwise the triangle must be isosceles as well as right, which forces an equilateral triangle...
View ArticleThe Erasmus tedrahedron
Professor Erasmus has constructed a special tetrahedron that he modestly calls the "Professor-Erasmus-tetrahedron". The professor claims that all four faces of his tedrahedron are right-angled and...
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