Orthographic projection geometry: In orthographic projection, the projectors (visual rays) are parallel to the plane of projection. Decide whether this statement correctly describes orthographic projection.

Introduction / Context:
Orthographic projection forms views by projecting points of a 3D object onto planes. The orientation of the projectors relative to the projection plane defines the geometry. This item checks the fundamental relationship used in orthographic views.

Given Data / Assumptions:

• Orthographic projection uses parallel projectors.
• First-angle and third-angle are layout conventions, not different projection geometries.
• The plane of projection is the sheet plane for each view.

Concept / Approach:
In true orthographic projection, projectors are parallel to each other and perpendicular to the plane of projection. Being perpendicular avoids perspective distortion and preserves true sizes along directions parallel to the projection plane. Saying projectors are parallel to the plane is incorrect.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: