Given the cyclic quadilateral below,
In a cyclic quadilateral, the sum of angles is 360°
The sum of the opposite angles of a cyclic quadilateral is 180° i.e,
[tex]\begin{gathered} x^0_{_{_{_{}}}}+z^0=180^0_{_{}} \\ w^0+y^0=180^0 \\ (\text{Sum of the opposite angles of a cyclic quadilateral)} \end{gathered}[/tex]
Hence, the equation to find the measure of angle O i.e x° is,
[tex]x^0_{_{_{_{}}}}+z^0=180^0_{_{}}[/tex]
