Assertion: tetrahedron's angle | /r/CapableOf | divide sphere
Facets:
value: into 120 triangle full icosahedral symmetry
type: OTHER
Source sentences:
text: π / 5 , π / 3 , π / 2 angles, dividing a sphere into 120 triangle Full Icosahedral symmetry has 15 mirror planes (seen as cyan great circles on this sphere) meeting at orderangles, dividing a sphere into 120 triangle fundamental domains .