chemistry, a pentagonal bipyramid is a molecular geometry with one atom at the centre with seven ligands at the corners of a pentagonal bipyramid. A perfect
In geometry, the great dodecahedron is one of four Kepler–Poinsot polyhedrons. It is composed of 12 pentagonal faces (six pairs of parallel pentagons),
In chemistry, pentagonal pyramidal molecular geometry describes the shape of compounds where in six atoms or groups of atoms or ligands are arranged around