okay here is the difrence a cuboid is a shape that is 3D and has eight faces a cylinder however is a 3D shape but it only has 2 faces the top and the bottom face
A solid
The simplest such shape is PYRAMID.
It is important to learn and remember the name of 3D shapes. A 19 faced 3d shape is called a nonadecahedron.
A tetrahedron.
base
A rather simplistic answer is: A cube or cuboid shape has (usually) 2 sides, 2 ends, 1 top and 1 bottom.
A hexahedron has a triangular pyramid on top and on bottom and share the bases.
Cone
okay here is the difrence a cuboid is a shape that is 3D and has eight faces a cylinder however is a 3D shape but it only has 2 faces the top and the bottom face
A hexahedron is the name for a 6 sided 3D shape.
A nonagon is a 2D shape and there is not a 3D equivalent shape.
the name of a 20 sided 3d shape is called a icosahedron
prism:)
There is no special name since the resulting shape depends on the original shape. For example, a cuboid will remain a cuboid, a cube will become a cuboid.
If you take a regular four sided pyramid and chop off the top, parallel with the base, the left over piece would be a solid with four identical trapezoidal faces and a square top and bottom. The only name I know is 3-D trapezoid.
The 3D shape with 2 octagons and 8 squares is called a truncated square antiprism. It is a type of prism where the top and bottom faces are octagons, and the side faces are squares. This shape has a total of 10 faces, including 2 octagons and 8 squares.