A 3D shape that has 6 edges is called a hexagonal prism.
That 3D shape is called triangular pyramid.
It has 12 edges and 6 faces
pentagon
a cube
A triangular prism.
a cube or cuboid
A pentagonal pyramid.
cube!
tetrahedron
It is a pentagonal based pyramid that has 6 vertices, 6 faces and 10 edges
Pentagonal Pyramid