The thirteenth chapter of the Linear Perspective Master Course on NMA by Erik Olson.
Diagram 107: A Scene with Multiple Referenced Slopes, Objects and Figures
Diagram 107 (cont.)
Diagram 108: Floating and Tipped Boxes with Lids Referenced to the Ground
Diagram 109: Various Angled Planes Swiveling from Single Joints
Diagram 110: A Scene with a Multiple Sloped Road and Airplanes
Diagram 110 notes