What is 3rd Angle Projection?
It is the display of a 3-Dimensional object in specific 2-Dimensional views.
The 3 views included would be:
--a Top View, seen in the upper left.
--a Front View, seen in the lower left.
--a Right View, seen in the lower left.
--An Isometric view may also be added to represent the object in 3-Dimensions, seen in the upper right.