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If every interior angle of regular octagon is \( \Large 135 ^{\circ} \), then find the external angle of it.

A) \( \Large 65 ^{\circ} \)
B) \( \Large 75 ^{\circ} \)
C) \( \Large 45 ^{\circ} \)
D) \( \Large 55 ^{\circ} \)

Correct Answer:



C) \( \Large 45 ^{\circ} \)

Description for Correct answer:
Every external angle of octagon

= \( \Large 180 ^{\circ} - Interior\ angle \)

= \( \Large 180 ^{\circ} - 135 ^{\circ} = 45 ^{\circ} \)

Part of solved Geometry questions and answers : >> Elementary Mathematics >> Geometry

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