Answer:
U = 110
Explanation:
The formula for finding missing angle is.
a + b + c = 180 or in this case S + U + T = 180.
You already have the measurement of two angles so plug those in.
35 + U + 35 = 180
Now all you have to do is simplify and solve it.
35 + 35 + U = 180
70 + U = 180 you simplify by adding together 35.
U = 110 to cancel out 70 and isolate U you subtract 70 to both sides.