Question

what is the value of y?
learn about adjacent angles!
what are adjacent angles?
finding measures of adjacent angles
lesson: adjacent angles

Explanation:

Step1: Use angle relationship

From the figure, we know that \(y + 40^{\circ}=70^{\circ}\) (adjacent angles relationship).

Step2: Solve for \(y\)

Subtract \(40^{\circ}\) from both sides of the equation: \(y=70^{\circ}- 40^{\circ}\).

Answer:

\(30\)