hexagonal surface in a sentence

1. Most of these roughly spherical molecules consisted of arrays of 60 atoms in the form of truncated icosahedrons, having 12 hexagonal surfaces and 12 pentagonal surfaces.
2. As they fall through the air, their aerodynamic properties cause them to orient themselves horizontally, i . e ., with their hexagonal surfaces parallel to the sun pillar.
3. It's difficult to find hexagonal surface in a sentence.