Orthographic projection basically is a way of depicting three-dimensional articles in two dimensions. It applies numerous views of the article; from points of vision revolve around the object's middle through augmentations of 90 degrees.

Similarly, the views may be thought to be acquired by revolving the article by its centre through increase of 90 degrees. The views are placed virtual to each other on the basis of either of two schemes, which are first angle or third angle projection. In each, the look of observations may be thought of as being projected onto surfaces which create a transparent "box" around the article. The word "third-angle" is applied because, in comparison to "first-angle' projection, the directions of projection are revolved via two right angles about the article.

Similarly, the views may be thought to be acquired by revolving the article by its centre through increase of 90 degrees. The views are placed virtual to each other on the basis of either of two schemes, which are first angle or third angle projection. In each, the look of observations may be thought of as being projected onto surfaces which create a transparent "box" around the article. The word "third-angle" is applied because, in comparison to "first-angle' projection, the directions of projection are revolved via two right angles about the article.