The tenth chapter of the Linear Perspective Master Course on NMA by Erik Olson.
Diagram 84: Rotating a Cube with an Estimation Method using an Ellipse
Diagram 85: Drawing an Inclined and a Declined Road Section in 1 Point Perspective
Diagram 86: Drawing an Inclined and a Declined Road Section in 2 Point Perspective
Diagram 87: Creating a Declining Road Section with a Wall and Fence in 1 Point
Diagram 88: Creating an Inclining Road Section with a Wall and Fence in 2 Point
Diagram 89: Placing and Referencing Figures on an Inclined Slope
Diagram 90: Placing and Referencing Figures on a Declined Slope
Diagram 91: 2 Different Methods for Referencing Figures/Objects on Slopes
Diagram 92: Drawing Objects with Various Referenced Degrees of Slopes
Diagram 93: A Simple Scene with a Declined Street in 2 Point Perspective
Diagram 94: An In-Picture Method of Determining the Degree of Slopes
Diagram 95: Referencing Slopes with a Box with 4 Angled Lid Flaps
Diagram 96: Constructing a Simple House with a Roof and Dormer
Diagram 97: Measuring Degrees of Slope with Measuring Points and Auxiliary VPs