Information contained in a principal view: Does any single principal view show three of the three principal dimensions (width, height, depth)?

Introduction / Context:
Multiview drawings split 3D information across views. Understanding how much dimensional information each view conveys prevents errors in interpretation and dimensioning.

Given Data / Assumptions:

• Principal dimensions are width (W), height (H), and depth (D).
• Principal views: front, top, side.
• Standard orthographic projection conventions apply.

Concept / Approach:
A single principal view shows only two of the three principal dimensions: Front shows W and H; Top shows W and D; Side shows H and D. The third dimension is inferred by combining views. No single principal view alone displays all three at once; that would require pictorial views (isometric) or 3D models, not orthographic principal views.

Step-by-Step Solution:

Verification / Alternative check:
Lay out front and top views of a block. Front provides W and H but no direct D; top provides W and D but no direct H. Only by pairing views can you reconstruct full 3D size.

Why Other Options Are Wrong:

• “Shows all three” contradicts the essence of orthographic separation.
• “Only auxiliary views show two” is incorrect; auxiliary views also show two dimensions in their plane.
• “Four dimensions including thickness” invents a nonstandard dimension set.
• “Only the front view shows three” is false; front view shows two (W, H).

Common Pitfalls:
Expecting hidden lines to supply a third independent dimension; confusing isometric (pictorial) with orthographic principal views; overlooking the need for multiple views to avoid ambiguity.

Final Answer:
Incorrect: each principal view shows only two principal dimensions