Assertion: icosahedron's face | /r/CapableOf | assume rectangular shape
Facets:
Source sentences:
text: The truncation, by means of a rhombic triacontahedron, of all the vertices of an icosi-dodecahedron (polyhedron a in Fig.22), at the beginning transforms the triangular and pentagonal faces of the icosi-dodecahedron into hexagonal and decagonal polygons, respectively, both non-regular even though symmetric, whereas the faces of the triacontahedron assume a rectangular shape (ref: polyhedra b-d-f ) .