Question

Question 3 (1 point)
Find X.
A
B
72°
210°

Answer 1

To find X you need to use the equation for exterior angles. But use the equation for the vertex OUTSIDE of the circle since there are different ones for different types of these problems.

1/2(a-b)

So you would plug in the bigger number first then subtract by the smaller one.

1/2(210-72)

1/2(138)

= 69

That should be your answer. Hope it helps.