A pyramid
A square base pyramid
It is a pentagonal prism.
It is a square basef pyramid which also has 8 edges
A pentagonal prism has 15 edges
cube
cube
A pyramid
A 3D shape that has 6 edges is called a hexagonal prism.
It cannot be a simply connected 3d shape because it does not satisfy the Euler characteristic.
A square base pyramid
It is a pentagonal prism.
It is a square based pyramid that has 5 faces, 8 edges and 5 vertices
Triangular prism
A triangular prism
corners of a 3d shape
It is a square basef pyramid which also has 8 edges