One-Point Perspective

Correct answer: A. The illusion of distance and direction will look inconsistent

In one-point perspective, receding parallel edges are constructed toward one common vanishing point on the horizon line. That point establishes a consistent direction for depth. If it is misplaced, edges may converge at incompatible angles, making the road, room, or objects appear distorted and the distance illusion inconsistent. Therefore A is correct; the error cannot improve realism, remove negative space, or eliminate the horizon line.

Correct answer: A. Space logic will look inconsistent

The governing concept is consistent perspective: the horizon line represents the viewer’s eye level, and vanishing points must agree with the direction and viewpoint of the objects. If they do not match, receding edges, scale, and depth cues conflict, so the drawing feels spatially unstable. A is correct; B is opposite, and C and D do not automatically result from incorrect perspective construction.

Correct answer: C. The depth will appear unconvincing

In one-point perspective, equal real intervals do not remain equal on the picture plane. As the floor recedes toward the vanishing point, each successive interval appears smaller and visually closer to the next. If every gap is drawn equally, the normal compression of space is lost, so option C is the most precise answer. Option A may occur as a secondary effect, but C identifies the main perspective error.

Correct answer: B. Receding depth lines

In one-point perspective, receding edges that move away from the viewer along the depth direction converge visually toward one vanishing point on the horizon line. These are the depth or orthogonal lines. Edges parallel to the picture plane generally remain horizontal or vertical in the drawing, vertical lines do not all converge, and curved lines are not defined by this rule. Hence, receding depth lines are correct.