Assertion: polyhedron's vertex | /r/CapableOf | define regular icosahedron
Facets:
Source sentences:
text: The 12 edges of a regular octahedron can be subdivided in the golden ratio so that the resulting vertices define a regular icosahedron.
text: The 12 edges of a regular octahedron can be partitioned in the golden ratio so that the resulting vertices define a regular icosahedron.