The shape you will get if you cut a cuboid in half is a cube.
A cube is a 3D shape with a top and bottom.
cube
triangle * * * * * A triangle is NOT a 3d shape! A cube.
A cube
The shape you will get if you cut a cuboid in half is a cube.
cube
A cube is a 3D shape with a top and bottom.
cube
a cube is a 3d square and a cylinder is 3d circle + rectangle shape.
triangle * * * * * A triangle is NOT a 3d shape! A cube.
cube
A cube
A cube
A cube
They are cubes
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.