Distinguish, differentiate, compare and explain what is the Difference between First and Third angle projection. Comparison and Differences.

Difference between First and Third angle projection

S.No. First angle projection Third angle projection
1 An object is kept in the first quadrant. An object is assumed to be kept in the third quadrant.
2 Object lies between an observer and the plane of projection. The plane of projection lies between the observer and the object.
3 The plane of projection is assumed to be non-transparent. The plane of projection is assumed to be transparent.
4 Front (elevation) view is drawn above the XY line. Front (elevation) view is drawn below the XY line.
5 Top (plan) view is drawn below the XY line. Top (plan) view is drawn above the XY line.
6 Left view is projected on the right plane and vice versa. Left view is projected on the left plane itself.
7 It is followed in India and in European countries. It is followed in the USA.
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