Linked from
The 20 pages that link to Vertex (geometry), each with the reason it gives.
AngleBroader topic: The shared endpoint of an angle’s rays is its vertex.
Euler characteristicRelated: Vertices provide the zero-dimensional terms in the classical count.
PolygonBroader topic: Each polygon vertex joins two consecutive sides.
CircumcenterRelated: The three vertices are the points equidistant from the circumcenter.
Interior angleRelated: The two adjacent sides forming an interior angle meet at a polygon vertex.
ParabolaRelated: It marks the parabola’s turning point and lies halfway between focus and directrix.
QuadrilateralRelated: Four vertices mark the corners where a quadrilateral’s sides join.
Platonic solidRelated: The same number of faces must meet at each Platonic solid vertex.
TetrahedronRelated: Four vertices are the tetrahedron’s corners.
DiagonalBroader topic: A diagonal connects a pair of polygon or polyhedron vertices.
Simplicial complexBroader topic: Vertices are the basic elements from which every simplex is formed.
3D modelingBroader topic: Mesh vertices provide the positions from which edges and faces are formed.
Edge coverRelated: An edge cover must include an edge incident to every vertex.
Kawasaki's theoremBroader topic: The theorem concerns crease rays meeting at a single vertex.