please help me solve these questions about angles

Q32
In triangle ABC
72 40 2x = 180 (angles sum of triangle)
x=34 (angle ACE)

angle CEB=40 34=74 (ext. angle, of triangle)

In triagnle EFD
90 74 angle FDE=180 (angles sum of triangle)
angle FDE=16

on line EDB
16 angle CDF 90=180 (adj angles on st.line)
angle CDF=74