Navigating to a top-down orthographic view and applying a section box creates an easy to understand floor plan. Navigating to a side view allows you to create elevation views. Add a section box ...

Orthographic projections have a set of standard lines to show different aspects of the diagram. These lines allow complex shapes to be drawn simply in 2D. In third angle, what you see from the ...

If you had a formal drafting class, you probably learned about making orthographic projections ... where you view a 3D object as a series of 2D views from different angles.