The angles marked in the figure are measured in degrees. Find x.

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Mathematics JAMB 1980

The angles marked in the figure are measured in degrees. Find x.

  • 45o
  • 90o
  • 60o
  • 15o
  • 30o checkmark

The correct answer is: E

Explanation

Sum of external angles = 360o

3x + 5x + x + 2x + x = 360o

12x = 360o

x = 30o
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