Question

2. Find the measure of angle 'a' in each figure. give reason in each case ​

Answer 1

Answer:

1 ) 50° + a = 90°

a = 40°

2) a = 43° (Vertically opposite angle)

3) 209° + 96° + a= 360

305 + a= 360

a = 55°

4) 63 + a = 90

a = 27°

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Answer 2

Answer:

3x+93+18=180

3x=180-93-18

3x=69

x=69/3

23

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