Two parallel lines are intersected by a transversal. One of the angles formed measures \( 27^{\circ} \). What is the measurement of an adjacent angle? Enter your answer in the box.

When two parallel lines are intersected by a transversal, several angles are formed. The angles that are adjacent to each other are supplementary, meaning they add up to \( 180^{\circ} \). Given that one of the angles measures \( 27^{\circ} \), we can find the measurement of the adjacent angle by using the following formula: \[ \text{Adjacent Angle} = 180^{\circ} - \text{Given Angle} \] Substituting the given angle: \[ \text{Adjacent Angle} = 180^{\circ} - 27^{\circ} \] Now, let's calculate it: \[ \text{Adjacent Angle} = 153^{\circ} \] Thus, the measurement of the adjacent angle is \( 153^{\circ} \).