Auxiliary views in technical drawing: a partial auxiliary view is created specifically to show only which portion of the object in true size and shape?

Introduction / Context:
Auxiliary views reveal the true size and shape of features that are inclined or oblique to the principal planes (front, top, right). A partial auxiliary view limits the projection to only the necessary area, improving clarity and reducing clutter.

Given Data / Assumptions:

• An inclined plane appears foreshortened in principal views.
• Auxiliary projection onto a plane parallel to the inclined surface shows it true size.
• “Partial” indicates we do not redraw the entire object in the auxiliary plane.

Concept / Approach:
By projecting perpendicular to the inclined surface onto an auxiliary plane parallel to it, we obtain a true-size view of the inclined face. A partial auxiliary isolates only that face (and closely related edges/holes), ignoring unrelated geometry to enhance readability.

Step-by-Step Solution:

Verification / Alternative check:
Measure an edge on the inclined plane in the auxiliary view; it should match its true length from the model or calculations, confirming you chose the correct projection direction.

Why Other Options Are Wrong:

• The projected top/side views are principal views, not auxiliary; they still foreshorten inclined faces.
• None of the above: Incorrect because the partial auxiliary specifically targets the inclined plane.

Common Pitfalls:
Projecting at the wrong angle (not normal to the surface) or over-detailing the partial view, defeating its purpose.

Final Answer:
projected inclined plane