Assertion: icosahedron's polyhedron | /r/HasProperty | self-dual
Facets:
value: topologically
type: DEGREE
Source sentences:
text: A geometrically self-dual polyhedron is not only topologically self-dual, but its polar reciprocal about a certain point, typically its centroid, is a similar figure.
text: If a polyhedron is self-dual, then the compound of the polyhedron with its dual will comprise congruent polyhedra.