vertex

(noun)

The common point of the two rays of the angle, or its equivalent structure in polyhedra (meeting of edges) and higher order polytopes.

Related Terms

Examples of vertex in the following topics:

  • Boranes: Boron-Hydrogen Compounds

    • ., B5H9 an octahedron missing one vertex)
    • conjuncto- two or more of the above are fused together (e.g., the edge or two vertex fused B19H221−, face or three vertex fused B21H181−, and four vertex fused B20H16)

  • Silicate Units, Silicate Chains, Silicate Sheets

    • Each oxygen atom forms one vertex of the tetrahedron.
    • If two [SiO4]4− tetrahedrons share an oxygen atom at one common vertex, an [Si2O7]6− ion is formed.

  • Drawing Hydrocarbon Structures

    • In addition to the two ends, there is now a vertex that represents a third carbon atom.
    • Each vertex, as well as the two ends, represents a carbon atom.

  • Phosphorus Compounds

    • Metaphosphoric acid, (HPO3)n, which occurs when phorphoric-acid molecules become bound together in ring structures, each vertex of the ring containing one acidic OH proton.

  • Lone Electron Pairs

    • Both classes of geometry are named after the shapes of the imaginary geometric figures (mostly regular solid polygons) that would be centered on the central atom and have an electron pair at each vertex.

  • The Structure and Properties of Water

    • The water molecule forms an angle with an oxygen atom at the vertex and hydrogen atoms at the tips.