What are the differences between first-angle projection and third-angle projection in technical drawing?

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Accepted Answer

First-angle projection is commonly used in Europe and Asia, while third-angle projection is commonly used in North America.

First-angle projection places the object in the first quadrant, with the front view closest to the observer.
Third-angle projection places the object in the third quadrant, with the top view closest to the observer.
In first-angle projection, the views are placed on the planes of projection behind the object, while in third-angle projection, the views are placed in front of the object.
First-angle projection is commonly used in Europe and Asia, while third-angle projection is commonly used in North America.

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