Assertion: octahedron's edge | /r/HasProperty | shared with regular dodecahedron
Facets:
Source sentences:
text: In proportion to this golden rectangle, an enclosed cube's edge is ϕ, when the long length of the rectangle is ϕ + 1 (or ϕ2) and the short length is 1 (the edge shared with the regular dodecahedron).