Chapter 8 used a single vanishing point. This chapter adds a second — so both visible faces of an object recede, exactly the way most real buildings are actually seen from a street corner.
One-point perspective only looks fully natural when the viewer is facing an object dead-on — one whole face parallel to the picture plane. In reality, we almost always see buildings and objects from an angle, with two faces visible at once, each running off toward its own vanishing point. That's exactly what two-point perspective draws.
Nothing in a measured perspective is guessed. The top view sits on the picture plane (PP), turned so only its nearest corner touches it. Lines from the station point (SP) parallel to the plan's edges find the two vanishing points. Visual rays from SP to each corner of the plan cross the PP; drop straight down from those crossings and the corners land exactly where they belong. The corner touching PP is the only line at true scale, so every height is measured there and carried along a line to a vanishing point.
Each exercise below prints as a full-scale A3 sheet — the same format used in EGD practical assessments. The reference thumbnail shows the completed drawing; redraw it full-size on paper using correct line types. Use your printer's "Actual Size" setting (not "Fit to Page").