Question

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Answer 1

Answer:

(a)

a = 106°

b= 48°

(b) solution

5c +4c = 180 (adjacent angle)

9c = 180

c= 20

now

5c + 2d = 180 (adjacent angle)

5(20) + 2d = 180

100 + 2d = 180

2d = 80

d= 40