You can create a solid wedge.
The base of the wedge is drawn parallel to the XY plane of the current UCS with the sloped face opposite the first corner. The height of the wedge is parallel to the Z axis.
You can use the Cube option of the WEDGE command to create a wedge with sides of equal length.
If you use the Cube or Length option when you create a wedge, you can also specify the rotation of the wedge in the XY plane when clicking to specify the length.
You can also use the Center Point option to create a wedge using a specified center point.