Parallel lines r and s are cut by two transversals, parallel lines t and u.
How many angles are alternate interior angles with angle 9?
![Parallel lines r and s are cut by two transversals parallel lines t and u How many angles are alternate interior angles with angle 9 class=](https://us-static.z-dn.net/files/d8c/fde8ad16052eccd7899e3a79dd46333e.jpeg)