Triangle 3
Quadrangle 4
Pentagon 5
Hexagon 6
Heptagon 7
Octagon 8
Nonagon 9
Decagon 10
A vertice is the point on a three dimensional shape where three or more edges meet. Imagine a cube, the vertice would be more easily called the "corner". With more complex shapes, this different definition was needed, so from a pyramid to a dodecahedron, where three or more sides com together to make a "corner" it is known as a vertice. This is especially important when you consider that shapes are defined by their number of sides and their number of vertices.
Many 3d shapes have a corner.
A vertex is the name of a corner on a solid where three or more faces meet (plural = vertices).
You can make a lot more than three shapes with just 2 prisms.
All right angle triangles have a square corner
Polygons are shapes with three sides or more. Circular shapes are NOT polygons.
Vertex.
a sphere
It is a corner: a point where three of more faces meet.
A corner
vertex
a vertex