Providing that the two lines are parallel then they are called corresponding angles.
Eight angles are formed - four for each line that the transversal cuts through. 2*4=8. Hope this helps!
Providing that the lines are parallel that the transversal passes through then it will have two equal alternate angles that are on opposite sides of the transversal.
Four.
No. Angles are not congruent. (Triangles may be congruent.)