A semi sphere is a 3D object,and has 3 vertices,2 faces and 3 edges.
It has 2 faces which are its base and its rounded body. It has 1 circular edge. It has no vertices.
There are no edges, a sphere is a closed shape but it has no linearly coupled sides.
A sphere has no faces, no edges, and no vertices.
There are zero edges because its a sphere and spheres have no edges
There are no edges on a sphere.