3D Orthogonal Views

In 3D, since you can rotate views about three axes, rather than just one, there are six orthogonal orientations, each of which corresponds to a standard orthogonal view: Top, Bottom, Left, Right, Front, or Back. The name of the view describes also the position from which the model is viewed.

The faces of this cube correspond to the 3D orthogonal views. The cube is displayed here in an Isometric view.

Top View

A Top view displays the model from the top:

the xy plane is parallel to your screen (as in a 2D model).
x is positive from left to right (horizontally).
y is positive from bottom to top (vertically).
z is positive toward you, perpendicular to the screen.

While, for a Bottom view:

y is positive from top to bottom (vertically).
z is positive away from you, perpendicular to the screen.

Front View

A Front view displays the model from the front:

the xz plane is parallel to your screen.
x is positive from left to right (horizontally).
z is positive from bottom to top (vertically).
y is positive away from you, perpendicular to the screen.

While, for a Back view:

x is positive from right to left (horizontally).
y is positive towards you, perpendicular to the screen.

Right View

A Right view, displays the model from the right:

the yz plane is parallel to your screen.
y is positive from left to right (horizontally).
z is positive from bottom to top (vertically).
x is positive toward you, perpendicular to the screen.

While, for a Left view:

y is positive from right to left (horizontally).
x is positive away from you, perpendicular to the screen.