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 4.10 Projection of Straight Lines – A line AB is 80 mm long and the end A is 15 mm above H.P. The other end B is 10 mm in front of V.P. The line is inclined at 30° with H.P. and 45° with V.P. Draw the projections of the line when it is in 1st quadrant.

## 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.

## Problem 4.8 Projection of Straight Lines

Problem 4.8 Projection of Straight Lines – A line PQ 80 mm long is parallel to V.P. and inclined to H.P. by 55°. The end point P is 20 mm below H.P. and 30 mm behind V.P. Draw the projections of the line PQ.

## Problem 4.7 Projection of Straight Lines

Problem 4.7 Projection of Straight Lines – A line AB 60 mm long is parallel to V.P. & H.P. both. The end A is 30 mm above H.P. and 40 mm in front of V.P. Draw the projection of line AB.

## Problem 4.6 Projection of Straight Lines

Problem 4.6 Projection of Straight Lines – A line YZ, 65 mm long, has its end Y 20 mm below HP and 25 mm behind VP. The end Z is 50 mm below HP and 65 mm behind VP. Draw the projections of line YZ and finds its inclinations with HP and VP.

## Problem 4.5 Projection of Straight Lines

Problem 4.5 Projection of Straight Lines – A line PQR, 80 mm long, is inclined to H.P. by 300 and V.P. by 450. PQ:QR :1:3. Point Q is in V.P. and 20 mm above H.P. Draw the projection of the line PQR when the point R is in the 1st quadrant. Find the position of the point P.

## Problem 4.4 Projection of Straight Lines

Problem 4.4 Projection of Straight Lines – The top view and the front view of the line EF, measures 60 mm and 50 mm respectively. The line is inclined to HP and VP by 30 degree and 45 degree, respectively. The end E is on the HP and 10 mm in front of VP. Other end F is in the 1st quadrant. Draw the projections of the line EF and find its true length.