FTP, give this term which is the most common structure and which is more frequently seen than trigonal prismatic, a polyhedron with eight faces.
In iron meteorites arranged in this kind of structure, treatment with weak acid can produce visible bands of kamacite bordered by taenite, called the Widmanst?ten pattern. Pollock conjectured that every number is the sum of at most seven of this kind of number, which is defined as the sum of two consecutive pyramidal numbers. The gyrobifastigium [GUY-roh-bye-fass-TIH-gee-um] and tridiminished icosahedron have the same number of faces as this solid, which Plato associated with air and which has six vertices and twelve edges. FTP, give this term which is the most common structure and which is more frequently seen than trigonal prismatic, a polyhedron with eight faces.
In iron meteorites arranged in this kind of structure, treatment with weak acid can produce visible bands of kamacite bordered by taenite, called the Widmanst?ten pattern.
octahedron (or octahedral)