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The top view and Front view of a line AB are 70 mm and 80 mm respectively. Its end A is 15 mm above HP and 20 mm in front of the VP.

The top view and Front view of a line AB are 70 mm and 80 mm respectively. Its end A is 15 mm above HP and 20 mm in front of the VP. The end B is in 3rd quadrant. Draw the projections of line AB if it is 100 mm long. Also find its inclinations with principle planes.

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Given Data:-

True Length (TL) = a’b1’ = ab2 = 100 mm

Top View = ab = 70 mm

Front View = a’b’ = 80 mm

A is 15 mm above HP = a’ (↑) = 15 mm

A is 20 mm in front of VP = a (→) = 20 mm

Point B is in 3rd quadrant.

Follow the same procedure as that of Q. 5. In this case the end B is in 3rd quadrant therefore, the FV of point B will below XY line whereas TV of point B will be above XY line

Note:

  • The point B however lies in the 3rd Quadrant so place a and a’ at right side.
  • In any question where measurement of an angle or length is asked, the answer is prone to human error. That margin of error is considered in examiner but shouldn’t be too much.

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