- Octahedron (Wikipedia)
In geometry, an octahedron (pl.: octahedra or octahedrons) is a polyhedron with eight faces. One special case is the regular octahedron, a Platonic solid composed of eight equilateral triangles, four of which meet at each vertex. Regular octahedra occur in nature as crystal structures. Many types of irregular octahedra also exist, including both convex and non-convex shapes.
- Synagogue of Satan (Wikipedia)
In the letters to the early Christian churches of Smyrna and Philadelphia in Revelation 2:9 and 3:9, reference is made to a synagogue of Satan (Greek: συναγωγή τοῦ Σατανᾶ, synagoge tou satana), in each case referring to a group persecuting the church “who say they are Jews and are not”. ¶ The verse has often been used to justify hatred against all Jews or particular subsets of modern Jews, which academic scholars generally view as ignorant of the biblical context based on the fact that the suspected author of Revelation was likely Jewish.[