User Coordinate System (UCS): by default, the UCS icon appears at which coordinate on the AutoCAD grid when a new file is created?
-
A0,0,0
-
B10,10,10
-
C20,20,20
-
DNone of the above
Answer
Correct Answer: 0,0,0
Explanation
Introduction / Context:The UCS defines the working X, Y, and Z directions in AutoCAD. Knowing the origin helps with precise modeling, snapping, and scripting coordinates for parametric or programmatic geometry creation.
Given Data / Assumptions:
- Default template or newly created drawing.
- UCS icon is visible.
- No custom UCS has been set yet.
Concept / Approach:At startup, the World Coordinate System (WCS) is active, with origin at 0,0,0. The UCS icon sits at that origin unless moved or UCS is redefined for task convenience.
Step-by-Step Solution:
Open a new drawing with a default template.Observe the UCS icon at the lower-left of the visible grid—this corresponds to 0,0,0.Use the ID command or cursor readout to verify coordinate values.Verification / Alternative check:Run the UCS command and choose World to reset; the icon returns to the origin at 0,0,0. Query the position by snapping to the icon’s location and checking coordinates.
Why Other Options Are Wrong:
- 10,10,10 / 20,20,20: Arbitrary coordinates; not the default origin.
- None of the above: Incorrect because 0,0,0 is the standard default.
Common Pitfalls:Users may think the icon’s screen location is the origin; zoom level and grid limits can shift its appearance, but its coordinate is still 0,0,0 unless changed.
Final Answer:0,0,0