Answer:
90 degrees
Step-by-step explanation:
you have angles of 110 and 70 on the sides. The triangle altogether equals 180 but that doesn't matter in this equation. Since y is directly between the two angles that are given, it is 90.
110-70=40/2=20 so add 20 to 70 and subtract 20 from 110 so you get 90.
