Assertion: tetrahedron'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: Each face is an identical triangle, each side is equal, and the angles are the same.
text: All the solid angles and vertex figures of a disphenoid are the same, and the sum of the face angles at each vertex is equal to two right angles.
text: Platonic solid basically means that the surfaces are all of the same shape, all regular polygons, and that all the angles are the same.