Assertion: triangle's element | /r/HasProperty | side
Facets:
Source sentences:
text: For example, the number of 2-dimensional elements in a 2-dimensional cube (a square) is one, the number of 1-dimensional elements (sides, or lines) is 4, and the number of 0-dimensional elements (points, or vertices) is 4.
text: The basic elements of any triangle are its sides and angles.