In a circle with centre $O$, chords $AB$ and $CD$ are equal. The minor angle $AOB$ is \(80^\

Question

In a circle with centre $O$, chords $AB$ and $CD$ are equal. The minor angle $AOB$ is $80^\circ$. Find the minor angle $COD$, giving a reason.[2]

Accepted Answer

$80^\circ$; equal chords subtend equal central angles

Equal chords and central angles