A regular tetrahedron (an equilateral triangular pyramid).
a pyramid is a 3D shape :)
is a square a 3d shape
A 3d shape can have infinite sides
A cube is a 3D shape with a top and bottom.
Quite a few, including:spherecylindercylinder of constant width.torus
a cube a cuboid and many many others
square based pyramid
A prism.
No, a cone cannot roll in a straight line. When a cone rolls, it rotates around its base, causing it to move in a circular path rather than a straight line. The shape of a cone is not conducive to rolling in a straight line due to its curved surface and pointed apex.
A regular tetrahedron (an equilateral triangular pyramid).
It depends on the 3d shape.
It is not a 3D shape.
A square or rectangular based pyramid is a 3D shape with 5 corners or points. It also has 4 triangular flat flaces, one square/retangular face and 8 straight edges.
Such a shape does not exits. See the attached link for all 3d shapes with 6 plane faces.
A camera is a 3D shape. A photograph is a 2D projection of a 3D shape onto a 2D shape.
a pyramid is a 3D shape :)