The correct option is
A True
Given, a regular polygon whose each exterior angle is
18 of a right angle
= 18×90o=45o4
Each exterior angle of a regular polygon = 360on, where n = number of sides
Now,
360on=45o4
Hence , n=8
Since, n should be an integer, so their exist a regular polygon whose each exterior angle is 18 of a right angle.