WAEC - Mathematics (2011 - No. 8)
A regular polygon of n sides has each exterior angle to 45o. Find the value of n
6
8
12
15
คำอธิบาย
Each interior angle = \(\frac{360^o}{n}\)
45o = \(\frac{360^o}{n}\)
45on = 360o
n = \(\frac{360^o}{45}\)
= 8
45o = \(\frac{360^o}{n}\)
45on = 360o
n = \(\frac{360^o}{45}\)
= 8