First angle projection is a method of creating technical drawings where the object is conceptually placed in the first quadrant of a two-dimensional plane.
In this system, the object is put in the 1st quadrant of the two-dimensional plane. The placement of the object is significant relative to the projection planes:
- The object is placed at the top of the horizontal plane.
- The object is placed in the front of the vertical plane.
This projection method is widely used in some countries and most of the European countries.
Here are the key points summarizing the first angle projection system as described:
- Quadrant: Object is situated in the 1st quadrant.
- Position relative to planes:
- Top of the horizontal plane.
- Front of the vertical plane.
- Geographical Usage: Widely adopted in certain countries and most European nations.
This system results in the views being projected onto the planes behind the object. For instance, the front view is projected onto the vertical plane behind the object, the top view onto the horizontal plane below the object, and so on.
