So these are vertical angles (share a vertex) which means they are the same measure. Set them equal to each other to find x
[tex](5x) = 100[/tex]
[tex]\frac{5x}{5} = \frac{100}{5}[/tex]
[tex]x = \frac{100}{5}[/tex]
Answer:
[tex]x = 20[/tex]
