The best estimate of the measure of the shown angle is 150°.
The shown angle is greater than 90° but less than 180°
This means the shown angle is an obtuse angle.
What is an obtuse angle?
An angle greater than 90° is called an obtuse angle.
In the shown figure there are two possibilities:
The measure of the angle is either 105° or 150° but the angle looks greater than 120°.
So, the measure of the shown angle is 150°.
Hence, the best estimate of the measure of the shown angle is 150°.
To get more about obtuse angles visit:
https://brainly.com/question/1821701
