Chapter 9.3, Problem 3WE

To determine

To find: find the measure of angle from the figure

Answer to Problem 3WE

The measure of angle $\angle$ 1 is $150°$

Explanation of Solution

Given information: we have given the figure of circle

  

Here, we can see that in the figure

Since both are vertically opposite angle so

Measure of arc $=150°$

As we know,

  $\angle$ 1=measure of arc

= $150°$

Therefore, the measure of the angle $\angle$ 1 is $150°$