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Theorems on the Tetrahedron

Published online by Cambridge University Press:  03 November 2016

Extract

If a tetrahedron with its opposite edges perpendicular is inscribed in a conicoid, its orthocentre (the intersection of the perpendiculars from the vertices to the opposite faces) will lie on the conicoid if the asymptotic cone of the conicoid has three perpendicular generators.

Type
Research Article
Copyright
Copyright © Mathematical Association 1937

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