Question
In the figure, O is the centre of the circle and OUVW is a rhombus. Find the value of ∠r + ∠s + ∠t + ∠v.
3 m

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In the figure, O is the centre of the circle and OUVW is a rhombus. Find the value of ∠r + ∠s + ∠t + ∠v.