Assertion: icosahedron's angle | /r/HasProperty | the same
Facets:
Source sentences:
text: In other words, all sides are equal, the angles are the same and the faces are identical.
text: Furthermore, in order to qualify as one of the platonic solids, the shape must have the same number of faces meeting at each vertex, and the dihedral angle between any two faces must be the same.
text: At the beginning of this course we defined regular polygons as particularly “symmetric” polygons, where all sides and angles are the same.