Question

what is the value of y?

Explanation:

Step1: Use the property of vertical angles

Vertical angles are equal. So the angle opposite to the \(70^{\circ}\) angle is also \(70^{\circ}\).

Step2: Use the angle - sum relationship

We know that \(70^{\circ}=y + 25^{\circ}\) (by the relationship of angles formed by the intersection of lines).
To find \(y\), we can rewrite the equation as \(y=70^{\circ}- 25^{\circ}\).

Answer:

\(45\)