Question

[D
5. Find the value of x in the following figures :
(a)
(b)

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Answer 1

x + x - 4y = 180°

2x - 4y = 180°

2(x - 2y) = 180°

(x - 2y) = 90°

x = 2y + 90°

and where is (b) sub division pic so I am unable answer