APA 6th Edition Schröcker, H. (2009). Orthologic Tetrahedra with Intersecting Edges. KoG, 13. (13.), 13-18. Preuzeto s https://hrcak.srce.hr/47618
MLA 8th Edition Schröcker, Hans-Peter. "Orthologic Tetrahedra with Intersecting Edges." KoG, vol. 13., br. 13., 2009, str. 13-18. https://hrcak.srce.hr/47618. Citirano 24.01.2020.
Chicago 17th Edition Schröcker, Hans-Peter. "Orthologic Tetrahedra with Intersecting Edges." KoG 13., br. 13. (2009): 13-18. https://hrcak.srce.hr/47618
Harvard Schröcker, H. (2009). 'Orthologic Tetrahedra with Intersecting Edges', KoG, 13.(13.), str. 13-18. Preuzeto s: https://hrcak.srce.hr/47618 (Datum pristupa: 24.01.2020.)
Vancouver Schröcker H. Orthologic Tetrahedra with Intersecting Edges. KoG [Internet]. 2009 [pristupljeno 24.01.2020.];13.(13.):13-18. Dostupno na: https://hrcak.srce.hr/47618
IEEE H. Schröcker, "Orthologic Tetrahedra with Intersecting Edges", KoG, vol.13., br. 13., str. 13-18, 2009. [Online]. Dostupno na: https://hrcak.srce.hr/47618. [Citirano: 24.01.2020.]
Sažetak Two tetrahedra are called orthologic if the lines through vertices of one and perpendicular to corresponding faces of the other are intersecting. This is equivalent to the orthogonality of non-corresponding edges. We prove that the additional assumption of intersecting non-corresponding edges (“orthosecting tetrahedra”) implies that the six intersection points lie on a sphere. To a given tetrahedron there exists generally a one-parametric family of orthosecting tetrahedra. The orthographic projection of the locus of
one vertex onto the corresponding face plane of the given tetrahedron is a curve which remains fixed under isogonal conjugation. This allows the construction of pairs of conjugate orthosecting tetrahedra to a given tetrahedron.