Assertion: icosahedron's face | /r/HasProperty | described by h. s. m. coxeter
Facets:
value: in 1948
type: TEMPORAL
Source sentences:
text: Jessen's icosahedron is one of a continuous series of icosahedra with 8 regular faces and 12 isosceles faces, described by H. S. M. Coxeter in 1948.