Assertion: polyhedron's volume | /r/HasProperty | part of the polyhedron
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: However the definition of the Euler-characteristic implicitly assumes that it is taken as a 2-dimensional CW-complex (i.e. the definition of the Euler characteristic given here is true for polyhedral surfaces, but it isn't true, if the interior volume is considered also to be part of the polyhedron.
text: Sometimes the interior volume is considered to be part of the polyhedron, sometimes only the surface is considered, and occasionally only the skeleton of edges or even just the set of vertices.
text: The polyhedron surrounds a bounded volume in three-dimensional space; sometimes this interior volume is considered to be part of the polyhedron, sometimes only the surface is considered, and occasionally only the skeleton of edges.