Question
In the figure, STVW, UTBA, UVXY, WXZA and SBZY are straight lines. Find the value of ∠p + ∠q + ∠r + ∠s.
3 m

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In the figure, STVW, UTBA, UVXY, WXZA and SBZY are straight lines. Find the value of ∠p + ∠q + ∠r + ∠s.