Question

9. Find the value of x in the following figure.
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Answer 1

Step-by-step explanation:

Sum of all angles = 360°x° + 120° + (x+10°) = 360°

Transportation:

x° + x + 10° = 360° - 120°

2x + 10° = 240°

2x = 240° - 10°

2x = 230°

x = 230°/2x = 115°

Therefore, x = 115°

x + 10° = 125°

Prove: 115° + 125° + 120°= 360°

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