Assertion: polyhedron's edge | /r/HasProperty | same length
Facets:
Source sentences:
text: It seems to satisfy the definition of a regular polygon — all the edges are the same length, all the angles are the same, and the figure has no loose ends (because they can never be reached).
text: In a regular tetrahedron, all faces are the same size and shape (congruent) and all edges are the same length.