If each interior angle of a regular polygon is 144 degree. Find the number of sides of the polygon.
Answers
According to question,
Given :
Interior angle =144⁰
Exterior angle =180⁰−144⁰
=36∘
∴no. of sides=360⁰/Exteriorangle∴
360⁰/36⁰=10
Thus , polygon has 10 number of sides
Answer:
Here you go mate.
Step-by-step explanation:
Given:
The polygon is a regular polygon ,
One of its angle = 144
Formula for sum of all interior angle of a polygon :
( n - 2 ) x 180 { where n is number of sides of the given polygon }
As we know it is a regular polygon all angles and sides of this polygon are equal.
A polygon having n sides have n number of angles.
One angle of a polygon = Sum of all angles
number of angles
One angle of this polygon = ( n - 2 ) x 180 = 144
n
144n = ( n - 2 ) x 180
144n = 180n - 360
360 = 180n - 144n
360 = 36n
n = 360/36
=10
So required polygon has 10 sides and polygon with 10 sides is DECAGON.
( OR )
Interior angle + Exterior Angle = 180
Exterior Angle = 180 - 144
= 36
As we know sum of all Exterior angles = 360 and each exterior angle = 36
No. of sides = 360/36
= 10
Answer: Decagon
Hope it was helpful.