Assertion: octahedron's symmetry | /r/HasProperty | represented by fundamental triangle
Facets:
value: with one vertex with two mirrors
type: OTHER
Source sentences:
text: The tetrahedral symmetry is represented by a fundamental triangle with one vertex with two mirrors, and two vertices with three mirrors, represented by the symbol (3 3 2).
text: The octahedral symmetry is represented by a fundamental triangle (4 3 2) counting the mirrors at each vertex.
text: The icosahedral symmetry is represented by a fundamental triangle (5 3 2) counting the mirrors at each vertex.
text: The dihedral symmetry is represented by a fundamental triangle (p 2 2) counting the mirrors at each vertex.