A ______ is a single point on a _____ object.

• A. Vertex, 3D
• B. Edge, 2D
• C. Corner, 3D
• D. Point, 1D

Answer: (A)

In 3D modeling, a single point that defines the corner of a mesh is called a vertex. Vertices are the coordinates that make up the corners where edges meet to form faces of a 3D object. They’re the fundamental building blocks used to shape and deform geometry; every vertex stores its position in 3D space (and often additional data like normals, UVs, and colors) so the mesh can be rendered and manipulated in software like Unity. An edge is a line between two vertices, not a point itself; a corner is a more informal way to refer to a vertex but the precise term used in 3D modeling is vertex. A point on a 1D object isn’t about the corner of a surface, since a 1D object (a line) doesn’t have corners in the same sense.