Assertion: icosahedron's face | /r/HasProperty | irregular 9/4 star polygon
Facets:
Source sentences:
text: Each face is an irregular 9/4 star polygon, or enneagram.
text: 60 Faces (irregular pentagons)
text: 32 Faces (12 regular decagonal; 20 regular triangular)
text: Faces: 12 regular pentagons, 20 regular hexagons Edge length icosahedron (a'):
text: Each face is an irregular 9/4 star polygon, or enneagram.