Question

O is the centre of a circle and ABCDE are the points on the circle . AB= BC = CD = DE= AE. Find the value of angle AOB.

Answer 1

ABCDE is regular Pentagon the Angel subtended at the centre= 360÷5=72;;;;;,, :. <AOB=72

Answer 2

here in the circle all given points divede the circumference in 6 equal parts. and we know that angle around a point (ie, centre Of) is 360 degree. so the one part of angle AOB will stand 60 degree.