Which angles are formed when two lines intersect, creating adjacent pairs that add up to 180 degrees?

When two lines intersect, the angles that are directly adjacent to each other form pairs known as supplementary angles. These angles are always complementary to each other in that their measures add up to 180 degrees. This property is a consequence of the straight angle formed at the intersection.

In the situation described, adjacent angles created by the intersection of two lines can be categorized as supplementary because they lie next to each other and share a common side. Understanding this relationship is crucial for solving various geometric problems involving angle measures and properties of intersecting lines.

Additionally, while complementary angles refer to pairs of angles that sum to 90 degrees, that does not apply here. Interior angles are typically discussed within the context of polygons, particularly concerning their properties and the sums of angles within a shape. Reflex angles are those that measure greater than 180 degrees but less than 360 degrees, which does not relate to the situation of adjacent angles formed by intersecting lines. Thus, the clear definition and relationship of supplementary angles appropriately applies to this scenario.