Question

Based on the illustration, what is the relationship between angle 1 and angle 4?

1. They are supplementary angles
2. They are congruent
3. They are alternate interior angles
4. They are complementary angles

Answer 1

1. They are supplementary angles

Explanation:

You want to know the relationship between angles 1 and 4 in the given diagram. It shows them as adjacent angles with the sides not shared forming a straight line.

Linear pair

The geometry of angles 1 and 4 makes them a "linear pair." The pair of angles forms a straight line. The angle measure of a straight line is 180°.

Angles 1 and 4 are supplementary angles.