Each exterior angle of a regular octagon is:

Each exterior angle of a regular octagon is:
  1. $36^{\circ}$
  2. $40^{\circ}$
  3. $45^{\circ}$
  4. $60^{\circ}$

Solution

Each exterior angle $= \dfrac{360^{\circ}}{8} = 45^{\circ}$.

Asked in: IMO

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