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| Math Central | Quandaries & Queries |
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Question from victor: Is a tetrix (a Sirpienski Pyramid/Tetrahedron) its own hyperplane?...alternatively, is it a hyperplane? |
No, it's not a hyperplane (in a standard geometry, at least) because it does not contain, for every pair of its points, the line through them.
Good Hunting!
RD
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