The faces in a 3-D shape (polyhedron, for example) are bordered by edges.
Many 3d shapes have a corner.
A 12 sided 3D shape is a dodecahedron.
A tridekahedron is a 3D 30 sided shape.
A 3D shape that has 6 edges is called a hexagonal prism.
A sphere for example.
Example is a ball
Some 3D shapes will tessellate as for example a brick wall
Cuboid would be an example.
take, for an example, a duck. This is a 3d shape because it has three dimensions. Compare this to a square, which is 2d. the difference is that the duck has a beak, and the square does not.
Tetrahedron (pyramids, for example)
All coins have length, width and depth, and are thus 3D objects. The Australian 50 cent coin has twelve sides, and so is dodecagonal in shape.
It depends on the 3d shape.
It is not a 3D shape.
A camera is a 3D shape. A photograph is a 2D projection of a 3D shape onto a 2D shape.
A sheet of A4 paper could be classed as a plane 2D shape, as it has length x width. A shoebox is an example of a 3D shape, as it has length x width x depth.
a pyramid is a 3D shape :)