Assertion: pyramid's face | /r/HasProperty | triangles of equal sides
Facets:
Source sentences:
text: The other faces of the regular pyramid are triangles of equal sides (congruent), each sharing two sides with the adjacent faces.
text: tetrahedron English (wikipedia tetrahedron) Noun (en-noun) (geometry) a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.