Use of Auxiliary Plans (Leaving Cert DCG): Flashcards
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Practise the cards
10 cards from this deck
What are auxiliary plans?
What are auxiliary plans?
Additional drawing views to solve complex geometric problems with oblique surfaces
Main purpose of auxiliary plans
Main purpose of auxiliary plans
Finding true shape of oblique surfaces
When are auxiliary plans essential?
When are auxiliary plans essential?
For oblique surfaces, finding intersections between solids, and measuring true distances/angles
How do auxiliary plans show true shape?
How do auxiliary plans show true shape?
By viewing surfaces perpendicularly (at right angles)
What is an edge view?
What is an edge view?
When a surface appears as a straight line in a view
Critical rule before finding intersections
Critical rule before finding intersections
Always establish the edge view of oblique surfaces first
What projection method is used?
What projection method is used?
Parallel projection lines
Direction to draw auxiliary plan
Direction to draw auxiliary plan
Perpendicular to the oblique surface
How to find intersection points
How to find intersection points
Where edges of one solid cross surfaces of another
Final step in auxiliary plan method
Final step in auxiliary plan method
Project intersection points back to original plan and elevation views