In the given figure, ABCD is a rectangle, PQRS is a parallelogram and TUVR is a rhombus, DQM is a straight line. Then find (i) ∠QPS, (ii) ∠PQD, (iii) ∠MQN
A
(i) 450, (ii) 980, (iii) 1050
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B
(i) 360, (ii) 420, (iii) 1210
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C
(i) 750, (ii) 460, (iii) 1210
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D
(i) 700, (ii) 430, (iii) 1050
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Solution
The correct option is C (i) 750, (ii) 460, (iii) 1210 (i)∠TRV=180∘−∠UVR=180∘−114∘=66∘ (adjacent angles of a rhombus)
∠SRU=∠SRT+12∠TRV=42∘+33∘=75∘
∠QPS=∠SRU=75∘ (opposite angles of a parallelogram)
(ii)∠PDQ=∠PDN−∠QDN=90∘−31∘=59∘
∠PQD=180∘−∠QPS−∠PDQ=180∘−75∘−59∘=46∘ (angles of a triangle)
(iii)∠DQN=∠PDQ=59∘ (alternate angles of transversal)
∠MQN=180∘−∠DQN=180∘−59∘=121∘ (angles on a straight line)