Mathematics
The figure given below shows a pentagon ABCDE with sides AB and ED parallel to each other, and ∠B : ∠C : ∠D = 5 : 6 : 7.
(i) Using formula, find the sum of interior angles of the pentagon.
(ii) Write the value of ∠A + ∠E.
(iii) Find angles B, C and D.
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