Introduction to 1-point and 2-point perspective

Demonstrate the 1-point setup on the whiteboard: a horizontal horizon line across the middle, a single vanishing point on it, a square drawn below the horizon, orthogonal lines from each corner of the square to the vanishing point, and a second square inscribed in the orthogonals at any depth to close the cube. Narrate each line's purpose as you go.

1. (20 min) Students replicate the construction on A3 paper. Walk the room and catch the classic errors: a vanishing point too far from center (asymmetric distortion), orthogonals not actually converging to the point, and a back square that does not close the cube.
2. (10 min) Independent practice: students draw five more cubes at varied positions — above, below, left, right, and far — all sharing the same horizon line and vanishing point, proving one point can serve many objects in a scene.

• Which cube was easiest to draw, and which was hardest? Why?
• What happens to a cube placed right at the vanishing point?
• Why does every box in the scene share the one vanishing point?

Recap 1-point, then introduce 2-point: two vanishing points spread along the same horizon, usually off-canvas to the left and right. Demonstrate — horizon line, two vanishing points near the page edges, a vertical line in the middle for the building's near corner, then lines from the top and bottom of that vertical to both vanishing points. The wedges form the two visible walls.

1. (20 min) Students construct one building in 2-point on paper. Walk the room and catch: vanishing points placed inside the visible canvas (leaning walls), the corner edge not kept truly vertical (a 2-point convention), and the two side walls drawn at different depths so the building looks twisted.
2. (10 min) Independent practice: students add a second building beside the first, sharing the same horizon and vanishing points so both sit on the same ground plane.

• Would your two buildings look right if each used its own pair of vanishing points? Why not?
• What happens to the walls when a vanishing point sits inside the canvas?
• Why does keeping the verticals vertical matter in 2-point?

Demonstrate the workflow on the projector. Load a photograph of an urban scene with clear 2-point perspective, open the 2-point perspective overlay, and drag the two vanishing points until the overlay's lines align with the building edges. Note that the points often need to be far off-canvas to match.

1. (25 min) In pairs, students repeat the process on their chosen photograph — one drives the tool while the other observes, then they swap. Once the perspective is matched, each student draws an additional element on paper that would belong in the scene (a new building, a vehicle, a figure walking through), using the matched perspective as their construction reference. They are not tracing — they are drawing originally into a matched space.
2. (5 min) Each pair shares their photograph and added element; the class judges which additions feel like they belong and which feel off — almost always a question of whether the element followed the matched perspective.

• Did your added element sit in the scene, or float out of it? What made the difference?
• How far off-canvas did the vanishing points end up?
• Where could perspective-matching be useful outside of class — concept art, architecture, comics, game environments?

Point students to the 2-point overlay page, the perspective category hub, and the two-point buildings plan to go further.