[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The Correct choice is ~ C
- [tex] \boxed{x = 90 \degree}[/tex]
[tex] \large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}[/tex]
In the given figure, the marked angles (x + 40° and x - 40°) forms a pair of co - interior angles ~
Hence, their sum is equal to ~ 180°
- [tex]x + 40 + x - 40 = 180[/tex]
- [tex]x = 180 \div 2[/tex]
- [tex]x = 90 \degree[/tex]
