Create a mesh wedge with rectangular or cubical faces.

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 set the number of divisions for each dimension of new mesh wedges in the Mesh Primitive Options dialog box. You can also modify these settings and the level of smoothness as you create the mesh object.
The Wedge option of the MESH command provides several methods for determining the size and rotation of the mesh wedges you create.