A dihedral angle is the angle formed between two intersecting planes. It is commonly found in geometry and is important in various fields such as chemistry, where it helps describe the spatial arrangement of atoms in molecules. The measurement of a dihedral angle is typically expressed in degrees or radians. In three-dimensional space, dihedral angles can be visualized using geometric shapes like cubes or tetrahedra. For example, the dihedral angle between two adjacent faces of a cube is 90 degrees. Understanding dihedral angles is essential for studying molecular structures in chemistry and for applications in architecture and engineering.