Assertion: triangle's base | /r/UsedFor | refer to point
Facets:
value: on the base
type: LOCATION
Source sentences:
text: Likely the most commonly known equation for calculating the area of a triangle involves its base, b, and height, h. The "base" refers to any side of the triangle where the height is represented by the length of the line segment drawn from the vertex opposite the base, to a point on the base that forms a perpendicular.