Assertion: octahedron's edge | /r/HasProperty | equal
Facets:
Source sentences:
text: The regular dodecahedron represents a special intermediate case where all edges and angles are equal.
text: The 8 vertices are truncated such that all edges are equal length.
text: Continuing from there in that direction, we pass through a degenerate case where twelve vertices coincide in the centre, and on to the regular great stellated dodecahedron where all edges and angles are equal again, and the faces have been distorted into regular pentagrams.