Assertion: icosahedron | /r/UsedFor | arrangements of trajectories
Facets:
value: of the five platonic solids
type: OTHER
Source sentences:
text: Of the five Platonic solids, only the cube and the icosahedron allow for arrangements of trajectories that can form strictly fine regular stars even for charged particles, provided these have equal masses and absolute values for oppositely charged particles (neither tetrahedron, nor octahedron can form these).