Step (1):-
First Draw a line BC=5cm
Step (2):-
Construct an angle ∠CBY=105o
Step (3):-
With B as centre and radius 4 cm, draw an arc to cut line by at point A.
Step (4):-
Again, construct an angle ∠BCZ=80o
Step (5):-
With C as centre and a radius 6.5cm draw an arc to cut CZ at point D.Join AD
Hence, ABCD is the required quadrilateral.