**Given Data:**
TL = a’b1’ = ab2 = 70 mm

a’ (↑) = 10 mm

a (→) = 20 mm

θ = 40°

α = 65°
**Follow the procedure given below step by step to draw the projection of line:**

Draw XY line.

Mark a’ and a at 10 mm above XY line and 20 mm below XY line
respectively.

Draw horizontal line (Locus of a’ and a) from a’ and a respectively.

Draw a line of true length (TL) = 60 mm from point a’ at an angle
of 40° (a’b1’).

Through Point a1’ draw a horizontal line (locus of b’).

From point at a’ draw a line inclined at 65°, which will cut the
locus of b’. Mark that point b’.

Join a’b’ (FV).

Take the projection of b1’ into TV (Draw a vertical line from point
b1’) which will cut the horizontal line passing through point a .
Mark that point b1, ab1 is your plan length (PL).

Take the projection of b’ into TV (Draw a vertical line from point b’).

Taking a as centre and ab1 as radius draw an arc which will cut
the locus of b, mark that point b. Join ab, that is your TV.

Taking a as centre and ab1 as radius draw an arc which will cut
the projection of b’, mark that point b.

Join ab, (TV).

Through Point b draw a horizontal line (locus of b).

Taking a as centre and TL = 70 mm as radius cut the locus of b.
Mark that point b2.

Join ab2 (TL).

Measure true inclinations Φ.