Polar relations of real triangles and tetrahedrons

Abstract

In the note “Polar relations of imaginary triangles and tetrahedrons” we showed that these relations are identical with those determined by the well-known imaginary ellipse or ellipsoid, and neither one nor the other passes through given points. But from the grounds given in this note , it follows that there can be certain polar relations between real trigons and tetrahedrons. This work is a natural continuation of the previous note, but relates to triangles and tetrahedrons taken to be real.