Assertion: triangle | /r/HasProperty | closed figure
Facets:
value: dimensionally
type: MANNER
value: in other words
type: OTHER
Source sentences:
text: The triangle is a closed figure formed from three straightline segments joined at their ends.
text: In other words, it is a closed 2D shape having three straight sides.
text: As such, a triangle has no volume and, because it is a two-dimensionally closed figure, the flat part of the plane inside the triangle has an area, typically referred to as the area of the triangle.