The sum of the interior angle of a regular polygon is 1800o. Calculate the size of one exterior angle of the polygon

The sum of the interior angle of a regular polygon is 1800^o. Calculate the size of one exterior angle of the polygon

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A 30^o
B 24^o
C 18^o
D 12^o

Correct Answer: Option A

Explanation:
Sum of interior âˆ s = 1800^o
âˆ´(n - 2) 180^o = 1800^o
180n -360^o = 1800^o
180n = 1800^o + 360^o
180n = 2160^o
n = 2160^o/180^o
n = 12 sides
Each exterior âˆ = 360^o/n
= 360^o/12
= 30^o

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The sum of the interior angle of a regular polygon is 1800o. Calculate the size of one ...

Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

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