Each interior angle of a regular polygon is 108°. How many sides has it?

  • A 5
  • B 7
  • C 9
  • D 14
waec 2004mathematics

The correct answer is A. 5

The exterior angle of the polygon = 180 – 108 = 72°. The sum of exterior angle of the regular polygon = 360°

The number of sides \(=\frac{360}{72}=5\)

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