Question

What is the measure of 11 years ago

Answer 1

its an exterior angle so <TVU=(120-12)/2-...

Answer 2

So what is the answer and you please explain it a little more.

Answer 3

can*

Answer 4

if an angle is outside a circle then its measure equals half the difference of the intercepted arcs :)
the intercepted arcs in your case are RS and TU
so <TVU=(TU-RS)/2=(120-12)/2=108/2=54

Answer 5

Thank you!