Assertion: triangle's vertex | /r/HasProperty | point
Facets:
Source sentences:
text: A vertex is a point where two or more curves, lines, or edges meet; in the case of a triangle, the three vertices are joined by three line segments called edges.
text: vertex of a triangle: the point at which two sides of a triangle meet.
text: Vertex is a point where two line segments meet ( A, B and C ).
text: Every triangle has 3 sides, 3 vertices (the points where the sides meet), and 3 angles.