The number of sides of two regular polygons is 5:4 nd the difference between them is 9 degrees .Find the no.of sides of the regular polygon.

Question

aaronandyson · Answer

@Qwertty123 
@ganeshie8 
@rebeccaxhawaii

qwertty123 · Answer

Let N be the number of sides of polygon with fewer sides. The other polygon then has 5N/4 sides. 

180 - 360/N - [180 - 360*0.8/N] = -9 
-360/N + 288/N = -9 
72/N = 9 
N = 8 
The other polygon has 10 sides. 
The internal angles are 135 and 144 degrees.

aaronandyson · Answer

pl use an equation editor..