Construct ☐ PQRS, such that l(PQ) = 3.5 cm, l(QR) = 5.6 cm, l(RS) = 3.5 cm, m∠Q = 110° , m∠R = 70° . If it is given that ☐ PQRS is a parallelogram, which of the given information is unnecessary?
Steps of Construction:
Step 1: Draw PQ = 3.5 cm.
Step 2: Draw ∠PQX = 110° .
Step 3: With Q as centre and radius 5.6 cm, draw an arc cutting ray QX at R.
Step 4: Draw ∠QRY = 70° .
Step 5: With R as centre and radius 3.5 cm, draw an arc cutting ray RY at S.
Step 6: Join PS.
Here, PQRS is the required quadrilateral.
If it is given that quadrilateral PQRS is a parallelogram, then the information l(RS) = 3.5 cm and m∠R = 70° is unnecessary.