Question
In the figure, EFKM, HGKL and DFGJ are three straight lines.  ∠s = 73° and ∠x = 52°. Find the value of ∠r + ∠t + ∠v + ∠w.
2 m

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In the figure, EFKM, HGKL and DFGJ are three straight lines.  ∠s = 73° and ∠x = 52°. Find the value of ∠r + ∠t + ∠v + ∠w.