In 2D drafting we reference the X and Y axes; by introducing the Z axis (perpendicular to XY), drafters can create and manipulate true 3D models. Is this statement accurate?

Introduction / Context:
Coordinate systems underpin drafting and modeling. 2D drafting uses the XY plane. Adding a perpendicular axis (Z) provides depth, enabling creation and manipulation of 3D geometry. This question checks understanding of how dimensionality follows from the coordinate system.

Given Data / Assumptions:

• Standard right-handed Cartesian coordinates are used.
• XY defines a plane; Z adds the third dimension.
• CAD tools respect UCS/WCS to place and edit geometry.

Concept / Approach:
Moving from 2D to 3D is the transition from planar coordinates (x, y) to spatial coordinates (x, y, z). CAD offers 3D creation commands (extrude, revolve, sweep) that use Z to create volume from planar sketches.

Step-by-Step Solution:

Verification / Alternative check:
Place a rectangle in XY, extrude along +Z; the result is a prismatic solid with height along Z. Switching UCS changes working planes but not the dimensional principle.

Why Other Options Are Wrong:
“Incorrect”: contradicts the definition of 3D coordinates. Conditions about parametric CAD, UCS locked to World, or perspective view are irrelevant to dimensionality itself.

Common Pitfalls:
Confusing view controls (3D Orbit) with coordinate dimensions; forgetting UCS orientation can change the active working plane.

Final Answer:
Correct