👉 The term "decahedrons" is a term used in crystallography and chemistry to describe a type of crystalline structure. A decahedron is a shape that has four equal sides, each with one of its edges parallel to another side. This means that the four corners are all aligned at a single point, forming an equilateral triangle. In crystallography, a decahedron is often used as a model for the basic unit of atoms in molecules and