Point representation in sketching — In engineering graphics, may a point be depicted using a simple dot symbol for visibility on paper or screen?

Introduction / Context:
Although a point has no physical extent, drawings must visually indicate its location so humans can read and construct geometry. Common representations include dots, small crosses, or node markers in CAD.

Given Data / Assumptions:

• Statement: points may be represented by simple dots.
• Goal: provide an easily visible, unambiguous marker.
• Context: freehand sketches, drafting, and CAD plotting.

Concept / Approach:
Representation conventions prioritize clarity. A dot is a minimal, widely understood symbol. The dot’s drawn size is arbitrary and chosen for visibility at the drawing scale; it does not assign geometric size to the point itself.

Step-by-Step Solution:
1) Identify representational need: humans need to see the location.2) Choose a standard symbol: a simple dot is common and sufficient.3) Conclude the statement is correct and aligns with drafting practice.

Verification / Alternative check:
CAD packages allow configurable point styles (dot, cross, X). The simplest default is often a dot-sized display, reinforcing the acceptability of this convention.

Why Other Options Are Wrong:

• Incorrect: Dots are acceptable and commonplace.
• Allowed only in CAD / only in hand sketching: Both contexts accept dots.
• Only crosshair symbols are valid: Crosshairs are useful but not mandatory.

Common Pitfalls:
Overly large dots that obscure nearby geometry; inconsistent symbol size when re-scaling drawings; forgetting to label critical reference points.

Final Answer:
Correct