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- 1. Match
Match the following commands with their functions
INTERSECT
Combines two or more 3D objects into one.
SUBTRACTS
Removes overlapping volume of 3D objects from another.
3D UNIONS
Creates a 3D object from overlapping volume of others.
- 2. Categorize
Assign these examples to the correct categories according to their commands.
(a) Union , (b) Subtract , (c) IntersectA sculpture created by merging two solids.
A pipe system with interconnected sections.
An architectural model merging several solid structures
A tool with a grip created by removing material
A hollow cube (imagine a box with no top)
A chair model developed by blending different geometrical shapes
- 3. Categorize
Organize these options into the right categories (a) The Statue of Liberty , (b) George Nelson Clocks , (c) Petra, Jordan
Mid-century clocks uniquely shape via union and subtraction principles.
Petra's rock-cut architecture stunningly showcases the subtractive design method.
Statue of Liberty unifies multiple components, exemplifying 'union' principle beautifully.
- 4. Drag and Drop
Type (a) to use the UNION command.
Type (b) to use the SUBTRACT command.
Type (c) to use the INTERSECT command.
INSUBUNISU - 5. Reorder
Reorder the following steps for the subtract command
Type 'SUB' or select 'SUBTRACT' command
Specify the 3D solids, surfaces, or regions to keep or be modified by subtraction.
Specify the 3D solids, surfaces, or regions to subtract.
Press enter to complete the command.
- 6. Match
Match the following misconceptions and solutions
When do I use 'intersect' command?
Subtract' merges; use 'separate' to disconnect.
Why isn't subtraction working?
Use to retain overlapping regions between objects.
Why are my objects connected?
Select the object to keep first, press enter, then select the object to remove, enter again.
- 7. Open Ended
Name three products designed using subtract or union commands.
- 8. Open Ended
Name three products designed using intersect command.
- 9. Poll
How confident do you feel using the "subtract" command in AutoCAD?
Not confident at all
Slightly confident
Moderately confident
Very confident
- 10. Poll
Rate your understanding of the applications of the "intersect" command.
Excellent understanding
Good understanding
Basic understanding
No understanding
- 11. Poll
Which of the following commands do you find most challenging to use effectively?
Subtract
Union
Intersect
none of these commands
- 12. Multiple Choice
When should you use the 3D Intersect command in AutoCAD?
To combine two objects into one without altering their geometries.
To keep only the overlapping volume of two or more objects.
To subtract one object from another.
To create non-overlapping geometries.
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