Calculate the value of x in the diagram above

Calculate the value of x in the diagram above

• A. 18^o
• B. 30^o
• C. 40^o
• D. 60^o
• E. 15°

Correct Answer: Option E

Explanation

vertically opposite angles are equal, hence

3x + 6x + 3x = 180°

12x = 180°

x = 15°