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in a polygon,two angles are 150 degree each and others are 105 degree each,find the no of sides.(please do it step-by step otherwise i can't understand)
Sum of angles=(n-2)×180
Given that 2 angles are 150 and others are 105 degree
ie.,2×150 + (n-2) × 105 = (n-2) × 180
(n-2) × 105 = 180n - 360 - 300
105n - 210 = 180n - 660
180n - 105n = 660 - 210
75n = 450 
n = 6
No: of sides = 6
 


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