Assertion: icosahedron's vertex | /r/CapableOf | pentagons meeting at vertex
Facets:
Source sentences:
text: Three polygons at a vertex series: 3 triangles meeting at a vertex -- tetrahedron 3 squares meeting at a vertex -- cube 3 pentagons meeting at a vertex -- dodecahedron 3 hexagons meeting at a vertex -- regular hexagonal tesselation of the plane