Question

10. Given that AB is a straight line. Calculate the value of xº. a 3x° 42 ° A 0 B

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Answer 1

Answer:

Since the angles are linear pair  

∠AOC + ∠BOC = 180°  

72° + x° = 180°  

72° + x° – 12° = 180°- 72°

x° = 108°

Hope this helps