Triangles at the top.
Extreme left)
Finding the missing interior angle of the triangle,
[tex]y=180-64-53=63[/tex]
On the other hand, such missing angle and angle x° are supplementary angles; thus,
[tex]x=180-y=117[/tex]
The answer to the first triangle (extreme left) is x=117.
2) Similarly,
[tex]\begin{gathered} y=180-81-54=45 \\ \Rightarrow x=180-y=135 \end{gathered}[/tex]
The answer to the second triangle is x=135
3)
[tex]\begin{gathered} y=180-82=98 \\ \Rightarrow x=180-48-98=34 \end{gathered}[/tex]
The answer to the third triangle is x=34
4)
[tex]\begin{gathered} y=180-109=71 \\ \Rightarrow x=180-37-71=72 \end{gathered}[/tex]
The answer to the fourth triangle (extreme right) is x=72
