Step-by-step explanation:
On the straight line where x is located on, we can identify that the line is equal to 180⁰.
180⁰ = 125⁰ + 30⁰ + x⁰
Find the value of x.
[tex]180 = 155 + x[/tex]
Subtract 155 from both sides:
[tex]25 = x[/tex]
The unknown measurement (x) equals 25⁰.
