The measure of angle 4 is also 118° because it is an alternate interior angle to angle 1 with respect to the two parallel lines and the transversal.
The figure in question features two parallel lines cut by a transversal, which creates several angles. When a pair of parallel lines are cut by a transversal, several angle relationships are formed. One of these is that alternate interior angles are congruent.
Here are the steps to find the measure of angle 4 given that the measure of angle 1 is 118°:
1. Identify the relationship between angle 1 and angle 4: If the lines are parallel and angle 1 is an alternate interior angle to angle 4, then they are equal because alternate interior angles are congruent for parallel lines cut by a transversal.
2. State the relationship: Since angle 1 and angle 4 are alternate interior angles, we have:
3. Apply the given information: Angle 1 is given as 118°, so:
= 118°