A three-dimensional orthotope is also **called** aright **rectangular** prism, **rectangular** cuboid, or**rectangular** parallelepiped. A special case of ann-orthotope, where all edges are equal length, is then-cube.

is a cube a 3d square? The basic difference between a **cube** and a**square is, a cube** is a **3D** figure (having 3dimensions) i.e. length, breadth and height while a **square**has only 2 dimensions i.e. length and breadth. The sides (faces) ofa **cube** are squares. The edges are straight lines. Thecorners (vertices) are at right angles.

In respect to this, can a rectangle be a cube?

A square is a **rectangle** with all sides equal. Soall squares are **rectangles**, but not all **rectangles**are squares. Similarly, a **cube** is a rectangular prism withall sides equal, and therefore all faces of equal area. So a**cube** is a rectangular prism, but not all rectangular prismsare **cubes**.

Is sphere a 3d shape?

**3D shapes** A **3D shape** is a blown up**shape**. We are learning about the following **3D shapes**– **sphere**, cube, cuboid, cylinder, cone, square basedpyramid, triangular based pyramid. A **sphere** has no edges andtherefore no corners. It has one curved face that goes all the wayaround.