First angle and third angle projection?

Question

Accepted Answer

First angle and third angle projection are two methods of creating orthographic projections of a 3D object onto a 2D plane.

First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.
In first angle projection, the object is placed in front of the viewing plane and the views are created by projecting lines from the object onto the plane.
In third angle projection, the object is placed behind the viewing plane and the views are created by projecting lines from the object through the plane.
The choice of projection method depends on the standards and conventions of the industry or country in which the design is being created.

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