Construct ???? P QRS, 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 c P QRS is a parallelogram, which of the given information is unnecessary?
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Answer:
l(RS) = 3.5 cm, m∠R = 70° is extra information
Step-by-step explanation:
PQRS is a parallelo gram
l(PQ) = 3.5 cm, l(QR) = 5.6 cm & m∠Q = 110° is Sufficient information to draw parallelogram
l(RS) = 3.5 cm, m∠R = 70° is extra information
as in parallelogram opposite sides are equal
=> RS = PQ and PQ is already given
in an a parallelogram sum of angles on a sides (sum of adjacent angles = 180°)
its given that ∠Q = 110°
=> ∠Q + ∠R = 180° => ∠R = 70° so not required
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