Consider the case when the transversal is EB and when it is AG.
∠BCG and ∠CFJ are corresponding angles
∠BCG and ∠HJG are corresponding angles.
Practice makes perfect
Two angles are corresponding when they have corresponding positions. Depending on which line is considered to be the transversal, we will get different answers. Let's first imagine that EB is the transversal. In this case, ∠CFJ is the corresponding angle. Like ∠BCG, it is to the right of the transversal and below the line.
Let's imagine AG is the transversal. In this case, ∠HJG is corresponding angle to ∠BCG. Like ∠HJG, it is below the transversal and above the line.
