Assertion: tetrahedron | /r/HasProperty | four equilateral triangles
Facets:
Source sentences:
text: The solid with the lowest number of sides is the tetrahedron (four equilateral triangles); progressing through the hexahedron or cube, the octahedron, the dodecahedron and the icosahedron (20 sides), the sphere can be considered to have an infinite number of sides.
text: From your learning, you probably know that the tetrahedron is an equilateral triangular pyramid.