Measuring an Angle Using a Protractor: Worked Example

Worked example

Question: Measure the angle shown below using a protractor.

Step 1: Place the centre hole of the protractor exactly over the vertex (the point where the two lines meet).

Step 2: Line up the baseline of the protractor with one side of the angle.

Step 3: Look at where the other side of the angle crosses the numbers on the protractor.

Step 4: Read the number. This is the size of the angle in degrees.

The correct answer is 45 degrees.