A vertex is the point where three or more edges of a solid figure meet.
In a 3-dimensional shape with polygonal faces, an edge is a straight line at which two faces meet. A vertex is a point where three or more edges meet. In solid shapes which are not polyhedra, an edge is still a line - possibly curved - where two faces meet. But a vertex can be any corner, for example, the point of a cone.
Three edges meet at each vertex.
Using the definition for corner of the place at which two converging lines or surfaces meet. There are 30 edges or corners to an icosahedron. * * * * * Normally, a corner of a solid shape is understood to be a vertex - not an edge! An icosahedron has 12 vertices.
That's a "vertex".
It is the vertex and its plural is vertices
Vertex mate :) 3 or more is a vertex
A corner where three edges meet is also called a vertex. A vertex can be also used in Algebra 2, in Quadratic Equations.
A vertex can be the corner of a polyhedron in which case at least three edges meet at a vertex.