Assertion: tetrahedron | /r/HasProperty | useful
Facets:
value: as the natural extension of triangles
type: MANNER
value: very
type: DEGREE
Source sentences:
text: As the natural extension of triangles, tetrahedrons in general are very useful in geometry for a wide variety of things (e.g. decomposing volumes into tetrahedra as an analog of triangulating 2D polygons).