In the figure, if the corresponding angle are congruent (∠13 ≅ ∠15). The parallel lines are
line u and line t
line m and line n
What are parallel lines
Parallel lines are two or more straight lines that exist in the same plane and never intersect, regardless of how far they are extended.
Parallel lines provide background to show prove some theorems in geometry
In the figure, when lines u and t and lines m and n as the set of parallel lines. This makes the corresponding angles congruent.