Problem 4.11 Projection of Straight Lines – A line AB is 80 mm long. It is perpendicular to profile plane. The point A is 40 mm above H.P. and 30 mm in front of V.P. Draw the projections.

## Problem 4.10 Projection of Straight Lines

## Problem 4.9 Projection of Straight Lines

Problem 4.9 Projection of Straight Lines – A line PQ contains a point O on it such that the ratio of the distance of the PO: OQ is 1:2. The end P is 20 mm above H.P. and it is in 1st quadrant. And the other end Q is in V.P. The point O is 35 mm above H.P. The line is inclined with the H.P. at an angle 30°. The elevation length of the line PQ is 70 mm. Draw the projections of the line PQ.