A sphere has no corners and no edges
A triangular pyramid has 4 corners and 6 edges (and 4 faces).
A cylinder shape consists of 2 edges and 3 faces. A cylinder does not contain any corners or vertices.
corners of a 3d shape
what shape has 2 faces 0 edges and 0 corners
A tetrahedron or triangular pyramid.
A circle for example
A triagular based pyramid has 4 corners, 6 edges and 4 faces
Spherical
A triangle has 3 sides (or edges) and 3 corners (or angles)
A triagular based pyramid has 4 corners, 6 edges and 4 faces
A sphere