Math Expression: Using Protractor Practice Question

Use a protractor to measure the angle x as shown in the picture below. Print out this page if you need to.

Step 1

First, we place the protractor on the vertex of the angle as shown below:
Step 2

Now, we rotate the protractor about the vertex of the angle so that the base line is along the line or arm as shown below:
Step 3

By reading the inner scale, we can see that the angle is 65°.
Step 4

Angle x is 65°. Clearly, the answer is B.