Question
In the figure, LSM, NSP and QSR are straight lines. ∠r is half the size of ∠s and ∠NSR is 123°. Find ∠r.
2 m

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In the figure, LSM, NSP and QSR are straight lines. ∠r is half the size of ∠s and ∠NSR is 123°. Find ∠r.