Question
In the figure, YOZ, AOB, COD and EOF are straight lines. Find ∠r + ∠h + ∠i + ∠j + ∠k + ∠n + ∠p + ∠q.
2 m

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In the figure, YOZ, AOB, COD and EOF are straight lines. Find ∠r + ∠h + ∠i + ∠j + ∠k + ∠n + ∠p + ∠q.