work out the size of angle x.
image included

Answer:
x = 105°
General Formulas and Concepts:
Geometry
Step-by-step explanation:
If the 2 lines are parallel, which they are, we can use specific theorems to help us solve for different angles.
Here, we see that we will use the Corresponding Angles Theorem. According the the theorem, this will allow us to find our value for x.