First of all we draw a rough sketch of given measurements :
Steps of Construction
(i) First we draw a line segment PQ = 4.1 cm.
(ii) At point P, construct ∠QPX = 75° with PQ.
(iii) At point Q, construct ∠PQY = 85° with PQ and cut QR = 3.9 cm from QY.
(iv) At point R, construct ∠QRZ = 110° with QR intersecting PX at point S.
(v) Thus, we obtained a quadrilateral PQRS.