Because CUBOID it is a name given to a certain kind of solid shape.
Approximatively a parallelepipedal
A cuboid or rectangular hexahedron.
A rectangular prism or cuboid.
cuboid, rectangular prism
A cuboid is a box shaped solid object. It has six flat sides and all angles are right angles. It 's shape is a hexagon.
Any solid object. 'Cuboid' means 'cube like'. A selection of cubic shapes is an house brick, a plank of wood,
a cuboid is a 3 dimensional shape
a box is good for cuboid
A cuboid is 100% of a cuboid and 0% of any other shape.
The base of a cuboid is a rectangle.
Visualising solid shapes is a very useful skill. We can see the hidden parts of a solid shape. For example, when a cuboid with a square face is cut vertically, then each face is a square. The face is a cross section of the cuboid
The solid is a cuboid, or "right rectangular prism" in which all angles are right angles. It is a box shape, or regular hexahedron.