Answer:
109
Step-by-step explanation:
180-71
[tex]\huge\tt\pink{\boxed{\tt{\blue{★\:Answer}}}}[/tex]
[tex]\longmapsto71\degree + x = 180 \degree \: ( \because \: linear \: pair) \\\longmapsto x = 180 -71 \\ \longmapsto109\degree[/tex]
