Question
In the figure, BCGJ, EDGH and ACDF are three straight lines.  ∠f = 56°. Find the value of ∠a + ∠b + ∠c + ∠d + ∠e.
2 m

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In the figure, BCGJ, EDGH and ACDF are three straight lines.  ∠f = 56°. Find the value of ∠a + ∠b + ∠c + ∠d + ∠e.