Question

HELP PLEASE!!!!!!!!!!!!!!

Answer 1

Answer:

$55^{\circ}$

Step-by-step explanation:

By the Vertical Angle theorem, $\angle 3 = 55^{\circ}$.

By the parallel line theorem, $\angle 7 = \angle 3 = 55^{\circ}.$

So, $\boxed{\angle 7 = 55^{\circ}}$ and we're done!.