# What is 1st angle orthographic projection?

## What is 1st angle orthographic projection?

1. First Angle Projection : In the first angle projection, the object is placed in the 1st quadrant. The object is positioned at the front of a vertical plane and top of the horizontal plane. First angle projection is widely used in India and European countries.

How do you solve an orthographic projection?

Steps used to create an orthographic projection

1. Choose a front view.
2. Decide how many views are needed to completely describe the object.
3. Draw the visible features of the front view.
4. Draw projectors off of the front view horizontally and vertically in order to create the boundaries for the top and right side views.

What is the purpose of first angle projection?

They are used to obtain engineering drawings for clarity. For the first angle projection the observer is placed on the left side of the object which puts the object right between the plane of projection and the observer.

### Who uses 1st angle projection?

First angle projection is widely used throughout all parts of Europe and often called European projection. Third angle is the system used in North America and alternatively described as American projection.

What do you mean by orthographic projection and isometric projection?

Isometric: a method of representing three-dimensional objects on a flat surface by means of a drawing that shows three planes of the object. Orthographic: a method for representing a three-dimensional object by means of several views from various planes.

How many orthographic projection of an object are possible in 1st angle projection?

Three orthographic views
True Lengths and Auxiliary Views An isometric view of a rectangular block is shown in Fig. 13.1. The corners of the block are used to position a line DF in space. Three orthographic views in first-angle projection are given in Fig.

## What is an orthographic project?

orthographic projection, common method of representing three-dimensional objects, usually by three two-dimensional drawings in each of which the object is viewed along parallel lines that are perpendicular to the plane of the drawing.

What are the fundamentals of orthographic projection?

Orthographic Projection is a method of producing dimensioned working drawings or blueprints of 3-D Objects using a series of related 2-D views of the object to communicate the object’s length, width and depth.

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