Answer:
B)2
Step-by-step explanation:
I think it is 2 but Im not percent. Hope this helps
Answer:
80°
Step-by-step explanation:
Since they are vertical angles, they are congruent to each other.
∠r ≅ 80°
Given:

To find:
The
.
Solution:
In circle B,
is central angle and
is inscribed angle from two points A and C.
According to central angle theorem, central angle is always twice of inscribed angle.
[Central angle theorem]

Divide both sides by 2.


Therefore,
.