Iso-Optic Plane of the Regular Tetrahedron
![]() In the plane, it is easy to show those points from which a segment subtends an angle because they form a circle. However, for a segment in space, the points subtended form a torus, where (i.e., the torus intersects itself). The long derivation for a tetrahedron is not shown; only the result is used.![]() "Iso-Optic Plane of the Regular Tetrahedron" from The Wolfram Demonstrations Project http://demonstrations.wolfram.com/IsoOpticPlaneOfTheRegularTetrahedron/ Contributed by: Géza Csima Suggested by: Jenő Szirmai Additional contributions by: János Tóth | ||||||||||||||
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