3D Primitives and Conversions - Autodesk AutoCAD 2013 Practical 3D Drafting and Design - page 128

These two points must not be on the same axis; at least they must define an area.
If these two points are on the same plane, the height is requested. If we specify a
negative value, the box is created downward:
Specify height or [2Point]: Point or value
Note
The easiest way to create a box is to specify the first corner and define the
opposite corner as relative coordinates in the three directions, like @length,
width, height .
Options for this command:
• Center : Instead of specifying the first corner, we can start by defining the
center of the box. Then, we define the other corner or options.
• Cube : After defining the first corner or center, this option allows for creat-
ing a cube and requests the cube length. If we pick a point, the cube may
be rotated.
• Length : After defining the first corner or center, this option allows you to
specify the length (along the X axis), width (along the Y axis), and height
(along the Z axis) of the box, in this order. If we pick a point to specify the
length, the box may be rotated.
• 2Point : The height of the box can be defined by specifying two points.
The WEDGE command
The WEDGE command (alias WE ) creates a wedge- a box cut by a diagonal plane.
The triangular faces stay on a plane parallel to the ZX plane.