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Which angle of projection does the figure resembles if it is lying in the 3rd coordinate?(a) Second – angle projection(b) Third – angle projection(c) Fourth – angle projection(d) First – angle projectionThis question was posed to me in a job interview.This interesting question is from Orthographic Reading in section Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer»

The correct option is (b) Third – angle projection

The explanation is: GIVEN in the question it lies in the 3RD quadrant. The plane of projection is assumed to be transparent. They lie between object and OBSERVER. When the observer views the object from the front, the rays of sight intersect the V.P, SIMILARLY when its top view is SEEN from bottom, the rays of sight intersect the H.P. The top view in this case comes above the front view and so it is third angle projection.



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