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Thursday, 05 March 2026
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If the exterior angles of a pentagon are x°, (x + 5)°, (x + 10)°, (x + ...

If the exterior angles of a pentagon are x°, (x + 5)°, (x + 10)°, (x + 15)° and (x + 20)°, find x
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  • A 118o
  • B 72o
  • C 62o
  • D 36o
Correct Answer: Option C
Explanation:
The sum of the exterior angles of a regular polygon = 360°.
\(\therefore x + (x + 5) + (x + 10) + (x + 15) + (x + 20) = 360°\)
\(5x + 50 = 360° \implies 5x = 360° - 50° = 310°\)
\(x = \frac{310°}{5} = 62°\)

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