Partial auxiliary view scope: a partial auxiliary view usually depicts only the features located on which specific portion of the object?

Introduction / Context:
Partial auxiliary views are a clarity tool: instead of redrawing the entire object in the auxiliary plane, we show only what is necessary—typically the features that lie on the inclined plane that requires a true-size representation.

Given Data / Assumptions:

• The object contains an inclined face with critical geometry.
• The drafter wishes to avoid clutter by limiting the auxiliary to relevant features.
• Hidden or center lines are annotation aids, not the defining region.

Concept / Approach:
By restricting the auxiliary to the plane of interest, the engineer highlights holes, slots, or profiles that need accurate measurement. Other planes are excluded because they would either be redundant or remain correctly shown in principal views.

Step-by-Step Solution:

Verification / Alternative check:
Check dimensional chains: the dimensions placed in the partial auxiliary should pertain to the inclined plane; unrelated dimensions should remain in principal views.

Why Other Options Are Wrong:

• Hidden lines / center lines: These are line types, not the region criterion for a partial auxiliary.
• None of the above: Incorrect, because the partial auxiliary focuses on the plane of interest.

Common Pitfalls:
Including geometry from adjacent planes, which defeats the purpose and adds confusion.

Final Answer:
plane