Assertion: octahedron | /r/HasProperty | formed
Facets:
value: from the face
type: OTHER
value: by placing a vertex
type: MANNER
value: from 3 orthogonal squares
type: OTHER
Source sentences:
text: Notice how the octahedron can be considered to be formed from 3 orthogonal squares:
text: An octahedron is formed by connecting the centers of the faces of a cube.
text: An octahedron is formed by connecting the centers of the faces of a cube.
text: Being dual polyhedra, an octahedron can be formed by placing a vertex at the center of each face of a cube, and similarly a cube can be formed from an octahedron.
text: When all are connected the octahedron is formed.
text: F is also the centroid of a tetrahedron with side length = side of the octahedron that can be formed from the face NJK of the octahedron (see Figure 4A below).