Answer:
[tex]\huge\boxed{x=54^o}[/tex]
Step-by-step explanation:
Look at the picture.
We have:
[tex]l=108^o[/tex]
Therefore
[tex]2\alpha=108^o[/tex] divide both sides by 2
[tex]\dfrac{2\alpha}{2}=\dfrac{108^o}{2}\\\\\alpha=54^o[/tex]
