Purpose statement: An auxiliary view is used to project features lying on an inclined plane so that shapes such as holes or profiles appear in their true shape and size, free from foreshortening. Decide whether this statement is correct.

Introduction / Context:
When a surface is inclined to the principal planes, features on it (holes, slots, profiles) appear foreshortened in standard views. An auxiliary view aligns the surface parallel to the plane of projection so features appear true. We evaluate the correctness of this statement.

Given Data / Assumptions:

• Surface of interest is not parallel to any standard plane.
• Auxiliary constructed with a reference line and perpendicular projectors.
• Goal is true shape/size of features on the inclined plane.

Concept / Approach:
True shape occurs when the surface is parallel to the viewer (projection plane). By projecting perpendicularly from the parent view to an auxiliary aligned with the surface, the geometry is undistorted, making it suitable for accurate dimensioning of holes and cutouts.

Step-by-Step Solution:
1) Identify the inclined plane and its edge view.2) Place the reference line parallel to the plane’s edge view.3) Project perpendicularly to construct the auxiliary where the plane is parallel to projection.4) Read the feature shapes and sizes directly in the auxiliary.

Verification / Alternative check:
Measuring the same hole in the principal view yields a smaller (foreshortened) diameter; the auxiliary shows the correct value, confirming its necessity.

Why Other Options Are Wrong:
“Incorrect” / “Decorative” / “Distort intentionally”: All contradict the very purpose of auxiliaries.

Common Pitfalls:
Forgetting to locate hole centers accurately; failing to align the reference line with the plane’s edge view.

Final Answer:
Correct