① In figure 5, sides QP and RQ of ∆PQR are produced to the points S and T respectively. If ∠SPR= 1350 and ∠PQT = 1100
, then find ∠PRQ.
② In figure 6, if PQ ⊥ PS, PQ ∥ SR, ∠SQR = 280
and ∠QRT = 650
then find the values of x and y.
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