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Answer:
option 3
Step-by-step explanation:
six equal sides so the total internal angles sum= (n-2)*180=(6-2)*180
=720
and each angle = 720/6=120
so in the triangle AFB
AF=BA
and angle A=120
so remaining angles are 30 and 30 only because it's isosceles triangle
so AFB=30
and for AEB triangle
taking AB as chord draw to radii to centre from A and B as well
so it will form a equilateral triangle which is AOB
so now we know that the chord making angle at the centre and at the circumference so angles at circumference is half of the angle at the centre
so AEB also 30